This is Earth. Maybe you've heard of it?
这是地球。也许你听说过它？
I sure hope so, because you live on one of its seven continents! Some of the most diverse habitats can be found in North America.
我当然希望如此，因为你住在七大洲之一！在北美可以找到一些最多样化的栖息地。
From the Aleutian Islands to the Isthmus of Panama, North America is made up of 23 countries and is the third-largest continent in the world. There are huge mountain ranges in the West, including the Rocky Mountains in the United States and the Sierra Madre mountain range in Mexico.
从阿留申群岛到巴拿马地峡，北美由23个国家组成，是世界第三大大陆。西部有巨大的山脉，包括美国的落基山脉和墨西哥的马德雷山脉。
In the middle of the continent, you'll find the Great Plains of the United States and Canada. These grasslands make up the largest biome in North America.
在大洲的中部，你会发现美国和加拿大的大平原。这些草原构成了北美最大的生物群落。
Further north, you'll find the Canadian Shield, a hilly region of lakes and swamps that stretches across northern Canada with rocks that are 1 billion years old. The eastern regions of North America contain everything from mountains to wetlands, including the Florida Everglades, a diverse ecosystem, home to over 20 rare, endangered, and threatened species.
再往北走，你会发现加拿大地盾，这是一个遍布湖泊和沼泽的丘陵地区，横跨加拿大北部，岩石的历史已经有10亿年了。北美洲东部地区从山地到湿地应有尽有，包括佛罗里达州的沼泽地，这是一个多样化的生态系统，是20多种珍稀、濒危和受威胁物种的家园。
And if you're looking for fun in the sun, head to the Caribbean, home to islands, islets, reefs, and caves, with more than 44 million people. Even further south is Central America, which has some of the most beautiful rainforests and exotic animals, like the poison dart frog, ocelots, tapir, capuchin monkey, and jaguar.
如果你想在阳光下寻找乐趣，那就去加勒比海，那里有岛屿、小岛、珊瑚礁和洞穴，人口超过4400万。再往南是中美洲，那里有最美丽的雨林和奇异的动物，比如毒镖蛙、豹猫、貘、卷尾猴和美洲虎。
With so many diverse ecosystems, there are a variety of animals that live throughout North America: bison, scorpions, pronghorn, armadillos, groundhogs, crocodiles, black bears, great white sharks, and the American bald eagle. The first North Americans are believed to have migrated from northeast Asia.
北美洲有这么多不同的生态系统，生活着各种各样的动物：野牛、蝎子、长角兽、犰狳、土拨鼠、鳄鱼、黑熊、大白鲨和美国秃鹰。第一批北美人被认为是从东北亚迁移过来的。
Today, there are more than 360 million people living in 23 different countries. The most populated metropolitan area in North America is Mexico City, home to over 21 million people.
今天，有超过3.6亿人生活在23个不同的国家。北美人口最多的大都市是墨西哥城，拥有2100多万人口。
Death Valley in the United States is North America's hottest, driest, and lowest point. It's 282 feet below sea level, has a record high of 134 degrees Fahrenheit, and gets fewer than 5 centimeters of rain a year.
美国的死亡谷是北美最热、最干燥和最低点。它在海平面以下282英尺，历史最高纪录是134华氏度，每年的降雨量不到5厘米。
If the Death Valley is too dry for you, then check out Lake Superior in Michigan. It's the world's largest freshwater lake.
如果死亡谷对你来说太干燥，那就去密歇根的苏必利尔湖看看。它是世界上最大的淡水湖。
There are so many awesome places to visit in North America, like the Grand Canyon in the United States, Chichen Itza in Mexico, and Niagara Falls in Canada and the United States. With environments and wildlife as diverse as its population, there's no place quite as unique as North America.
北美有很多很棒的地方值得一游，比如美国的大峡谷，墨西哥的奇琴伊察，加拿大和美国的尼亚加拉瀑布。北美洲的环境和野生动物种类繁多，没有哪个地方能像北美一样独特。
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