North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
North America and South America and Central America
America的用法和样例：
例句
用作名词 (n.)
Are you going to America by boat or by plane? 你到美国是坐船还是坐飞机？
It's time for us to say "No" to America. 是我们对美国说不的时候了。
One of his forefathers was an early settler in America. 他的祖先之一是美洲的早期移民。
There were lots of buffaloes in the North America 100 years ago. 100年前，北美有大量的野牛。
Maize is widely planted in the America. 玉米在美洲广泛种植。
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