名词
中文翻译：拱形梁
同义词：
['bend', 'curved beam']
例句：
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1.The crook rafter supports the roof of the house.
弯曲的横梁支撑着房子的屋顶。
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2. The old house has a crook rafter that needs to be replaced.
这座老房子有一个需要更换的弯曲横梁。
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3.The engineer designed the crook rafter to fit perfectly into the wall.
工程师设计了弯曲的横梁，使其完美地嵌入墙中。