名词
中文翻译：洞
同义词：
['crater', 'fissure', 'crevice', 'gap', 'hole', 'opening', 'aperture', 'breach']
例句：
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1. The rockis riddled with dog-holes that can be dangerous to climb through.
这块岩石布满了危险的孔洞，不适合攀爬。
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2. The old house had several dog-holes that needed repairing.
这所老房子有几个需要修补的洞。
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3.The car was damaged by a dog-hole in the road.
汽车在马路上的洞受损了。