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（You use the word OVER when you fold something or you do a movement as it can be described Xx over ）so that someone or something is no longer straight or flat, but is bent or folded in the middle.
这是词典释义里的话，so that之前省略了我括号里加上去的意思。
你折叠或做折叠的动作时使用over，表示使某人或某物不再指直或平，而是从中间弯折过来了。
As Sheila bent over, a sudden pain shot up her back.
He folded the paper over and put it in his pocket.
还是表示目的，引导目的状语从句。
所以呢
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