For example, in the 1800s a monstrous earthquake changed the course of the Mississippi River, a large river flowing in the central part of the United States of America.
例如,在19世纪,一场大地震改变了密西西比河,一条流经美国中部的大河的流向。
You'll have to give up the trip to America unless you have your passport changed before September 3.
除非你在九月三日前更换护照,否则你将不得不放弃去美国的旅行。
My eating customs have changed very much since I arrived in America.
自从我到达美国,我吃的习惯已经改变很大。
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