4周搞定2000+托福核心词
力气都排了出去→精疲力尽的
exhausting
常考释义
One problem was getting people to the upper floors, since after five or six stories it becomes exhausting to climb stairs.
一个问题是如何把人们带到高层去，因为在五六楼之上，爬楼梯就变得很累了。
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