，
I knocked my head against the doorpost and hurt it.
我的头
在门柱上, 
。
I knocked my head against the doorpost and hurt it.
我的头在门柱上, 。
I've banged into the doorpost and hurt my arm.
我着门柱, 把
。
I charged into a doorpost and hurt my head.
我一下到门框上, 头破。
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