为什么叫大航海时代？Why Do We Call It the Age of Exploration?

想象一下，如果你要寄一封信给住在地球另一端的朋友，信上写着："亲爱的朋友，我很想念你，希望你能来我家玩！"But how would that letter reach your friend? Would it travel by airplane, by ship, by car, or perhaps by some magical creature?

想象一下，如果你要给住在地球另一端的朋友寄一封信，信上写着："亲爱的朋友，我很想念你，希望你能来我家玩！"但是，那封信怎样才能送到你朋友手里呢？它会坐飞机、坐轮船、坐汽车，还是被某种神奇的生物带着飞过去呢？

In today's world, we can send messages around the world in just a few seconds with our phones and computers. We can hop on an airplane and be on the other side of the planet in less than a day. Maps on our devices show us exactly where we are and how to get anywhere we want to go.

在今天的世界里，我们可以用手机和电脑在几秒钟内把消息发送到世界各地。我们可以登上飞机，用不到一天的时间就到达地球的另一边。我们设备上的地图能精确地显示我们在哪里，以及如何到达任何我们想去的地方。

But what if you lived five hundred years ago, in a time before airplanes, before computers, before even trains or cars? What if you wanted to send a message to someone across the ocean—a vast body of water so big that you couldn't even see the other side? How would you even know what was on the other side of that ocean?

但是，如果你生活在五百年前，在飞机发明之前，在电脑发明之前，甚至在火车和汽车发明之前呢？如果你想给住在海洋另一边的人寄一封信——那片海洋大得你甚至看不到对岸——你会怎么做？你甚至怎么知道海洋另一边有什么呢？

This is exactly the world that existed about five hundred years ago, in a period we call the Age of Exploration. This was a time when brave sailors and explorers began sailing into the unknown, venturing beyond the edges of the maps, and discovering new lands, new peoples, and new wonders that no one in Europe had ever seen before.

这正是大约五百年前存在的世界，也就是我们所说的"大航海时代"。那是一个勇敢的水手和探险家开始驶向未知世界的时期，他们冒险越过地图的边缘，发现了新的土地、新的人民、以及在欧洲前所未见的新奇事物。

But why do we call it the "Age of Exploration"? And what makes this period so special and important that we're going to spend an entire book learning about it? Let's find out together!

但是，我们为什么称它为"大航海时代"呢？这个时期有什么特别和重要之处，值得我们用整整一本书来了解它呢？让我们一起来寻找答案吧！

超级英雄的航海梦：郑和下西洋的故事

Let's start our story with a real-life superhero—one who commanded a fleet of over 300 ships and 28,000 men. His name was Zheng He, and he lived in China during the early 1400s, almost a full century before Columbus sailed the ocean blue.

让我们从一个真实的超级英雄的故事开始——一个指挥着三百多艘船只和两万八千人的超级英雄。他的名字叫郑和，生活在十五世纪初的中国，比哥伦布横渡大西洋早了近一百年。

Imagine trying to gather all the students in your school—every single one—and get them onto boats. That's how many people Zheng He commanded! His ships were so massive that they made other ships look like tiny toys floating in a bathtub. The largest of his ships, called "bao chuan" or treasure ships, were said to be over 120 meters long. That's longer than a football field!

想象一下，如果你想把学校里的所有学生——每一个学生——都聚集到船上去。那就是郑和指挥的人数规模！他的船只非常巨大，让其他的船看起来像是浴缸里漂浮的小玩具。他最大的船叫做"宝船"，据说是长一百二十米以上。那比一个足球场还要长！

Zheng He made seven incredible voyages across the Indian Ocean, visiting places like Southeast Asia, India, Arabia, and even East Africa. He brought gifts from the Chinese Emperor to foreign rulers, and he brought back exotic animals, spices, and treasures from distant lands. On one voyage, he even brought a giraffe all the way from Africa back to China! The Chinese people had never seen such an animal before and thought it was a magical creature called a "qilin" that only appeared when a wise and good ruler was in power.

郑和进行了七次令人惊叹的横渡印度洋的航行，访问了东南亚、印度、阿拉伯，甚至东非等地。他把中国皇帝的礼物送给外国统治者，也从遥远的地方带回了异国动物、香料和珍宝。在一次航行中，他甚至把一只长颈鹿从非洲一路带回中国！中国人民以前从未见过这样的动物，以为它是一种叫做"麒麟"的神奇生物，只有在英明善良的统治者当政时才会出现。

But here's the most interesting part: Zheng He's voyages weren't really about exploring the unknown. They were more like giant parades—grand displays of China's wealth, power, and culture. The Chinese Emperor wanted other countries to know how great and mighty China was. Zheng He wasn't looking for new places to trade with or new resources to collect. He already had everything he needed at home.

但最有趣的部分是：郑和的航行并不是真正为了探索未知。它们更像是盛大的游行——展示中国的财富、力量和文化的盛大表演。中国皇帝想让其他国家知道中国是多么伟大和强大。郑和并不是在寻找新的贸易地点或新的资源。他在家乡已经拥有一切所需。

This is an important clue about why the Age of Exploration happened when and where it did. You see, while China under the Ming Dynasty was rich and powerful and didn't really need anything from the outside world, other parts of Europe were in a very different situation.

这是关于大航海时代为何在何时何地发生的一个重要线索。你看，虽然明朝统治下的中国富裕强大，并不需要外部世界的任何东西，但欧洲其他地方的情况却大不相同。

欧洲的"缺钱"烦恼：为什么欧洲人那么想去探险？

Let's travel across the world to Europe, to a time around the year 1400. Picture a small village in Portugal or Spain, where most people are farmers growing wheat and barley. They work from sunrise to sunset, yet many families struggle to have enough food. The soil is rocky, the winters are cold, and life is hard.

让我们跨越世界来到欧洲，大约公元1400年的时代。想象葡萄牙或西班牙的一个小村庄，那里大多数人都是种植小麦和大麦的农民。他们从日出工作到日落，但许多家庭仍然为吃饱饭而挣扎。土壤贫瘠，冬天寒冷，生活艰苦。

Unlike China, which had silk, porcelain, and spices that the whole world wanted, European countries didn't have many valuable products to offer the rest of the world. But here's the funny thing: Europe really, really wanted those wonderful things from Asia—silk that felt like water flowing through your fingers, porcelain so smooth and white it seemed magical, and spices like pepper, cinnamon, and cloves that could make plain food taste like a feast.

与拥有全世界都想要的丝绸、瓷器和香料的中国不同，欧洲国家没有太多有价值的产品可以提供给世界其他地方。但有趣的是：欧洲真的、真的非常想要亚洲的那些好东西——触感如流水般丝滑的丝绸，光滑洁白似乎有魔力的瓷器，还有胡椒、肉桂和丁香这样的香料，它们能把平淡的食物变成盛宴。

The problem was that getting these goods was incredibly expensive. You see, for hundreds of years, the main trade route to Asia was the Silk Road, a network of ancient trade routes stretching over 6,000 kilometers from China to the Mediterranean Sea. Caravans of camels and horses carried precious goods from east to west, but the journey was dangerous and slow. Bandits attacked travelers, storms destroyed goods, and the route was controlled by various middlemen who charged high prices for passing through their lands.

问题是，获得这些商品的成本高得惊人。你看，几百年来，通往亚洲的主要贸易路线是丝绸之路——一张古老贸易路线的网络，从中国延伸到地中海，全长超过六千公里。骆驼和马组成的商队把珍贵的货物从东运到西，但旅途既危险又缓慢。强盗袭击旅行者，风暴摧毁货物，而且这条路被各种中间人控制，他们对过境的货物收取高昂的费用。

By the time goods from Asia reached Europe, they had passed through so many hands and been marked up so many times that they cost a fortune. A single kilogram of pepper, which grows abundantly in India, might cost the same as a entire cow by the time it was sold in Europe! Spices were literally worth more than gold in some places. This made Asian goods a luxury that only rich kings, queens, and nobles could afford.

当亚洲的商品最终到达欧洲时，它们已经经过了太多的中间环节，被加价了太多次，价格高得惊人。一公斤胡椒——在印度生长丰富——在到达欧洲时，价格可能相当于一头整牛！在某些地方，香料的价值简直比黄金还贵。这使得亚洲商品成为一种奢侈品，只有富有的国王、王后和贵族才能买得起。

This situation created what economists call a "trade imbalance." Europe was spending enormous amounts of gold and silver to buy goods from Asia, but Europe didn't have much that Asia wanted in return. The gold was flowing out of Europe like water flowing down a drain, and European leaders were very worried about it.

这种情况造成了我们经济学家所说的"贸易不平衡"。欧洲正在花费大量的黄金和白银来购买亚洲的商品，但欧洲没有太多亚洲想要的东西作为回报。黄金像水流进下水道一样从欧洲流出，欧洲的领导者们非常担心这个问题。

Imagine if you spent all your allowance every week buying candy from the store, but you didn't have anything valuable to sell back to the store to earn more money. Pretty soon, you'd have no money left and no candy either! That's kind of what was happening to Europe.

想象一下，如果你每周把所有的零花钱都花在从商店买糖果上，但你没有什么值钱的东西可以卖回给商店来赚更多的钱。很快，你就会既没有钱也没有糖果了！这有点像欧洲当时的情况。

地图边缘的秘密：世界比你想象的更大

Now, let's think about something else that was happening in Europe around the year 1400. People in Europe knew there was a world beyond their own continent, but their knowledge of that world was very incomplete and often quite wrong.

现在，让我们想想公元1400年左右在欧洲发生的另一件事。欧洲人知道他们的洲之外还有一个世界，但他们对这个世界的了解非常不完整，而且常常是错误的。

The maps of that time were very different from the maps we use today. In the middle of most maps was Europe, of course—after all, people in each country thought their own country was the most important. Surrounding Europe were places the mapmakers had heard of: North Africa, the Middle East, and parts of Asia. But beyond the edges of these maps? Mystery! The mapmakers would often draw sea monsters, giant waves, or simply write "Here be dragons" to warn sai