名词
中文翻译：门框
同义词：
['door frame', 'threshold例句：1. The transom is the part of a door that separates it from the wall.（门槛是门与墙分隔的部分。）']
例句：
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1. The transom is the part of a door that separates it from the wall.
门槛是门与墙分隔的部分。
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2.The craftsmanship on this transom is exceptionally fine.
这个门槛的工艺非常精细。
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3. The transom is where the door meets the wall.
门槛是门与墙相接的地方。