The journey began at an altitude of more than 5,000 meters()

问题描述:

The journey began at an altitude of more than 5,000 meters()the air was hard to breathe.
中间括号填什么?
1个回答 分类:英语 2014-10-30

问题解答:

我来补答
应该是where吧..
 
 
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