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Question

美国是世界的文化中心，它的影响辐射全球．

Answer 1

U.S.A. is a cultural center of the world, its influence radiates the whole world
アメリカは世界の文化センタ-で，その影响の辐射全世界
cultural : [ 'kʌltʃər(ə)l ]
a. 文化的

例句与用法:
1. Many people suffered from cultural shock when they came abroad.
许多人到国外时，都感受到文化震撼。
2. We should get a thorough understanding about the cultural diversity of the United States.
我们应该对美国文化的多样性有一个全面的了解。

influence : [ 'influəns ]
v. 影响,感化
n. 影响力,感化力,势力,权势

例句与用法:
1. He is a man of some influence in the government circles.
他是个在政府内有一定势力的人。
2. Listening to the music has a calming influence on her.
听音乐对她起了一种镇静的作用。

Answer 2

America is the centre of the world culture, and its impression have been spreaded to all the world.

Answer 3

America is the cultural hub of the world and the whole world is under its influence.