名词
中文翻译：洞
同义词：
['gap', 'crevice', 'aperture', 'opening', 'gaping hole']
例句：
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1. Thedog was digging a hole in the garden.
狗在花园里挖了一个洞。
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2.There's a small gap between the two pieces of wood.
两块木头之间有一个小缝隙。
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3. The hole in the wall is big enough for a person to crawl through.
墙上的洞足够一个人爬过去。