名词
中文翻译：洞
同义词：
['cave', 'crevice', 'gap', 'niche']
例句：
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1. The hole in the wall is big enough to fit a small dog.
墙上的洞足够大，可以容纳一只小狗。
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2. The hole in the ground was filled with water.
地上的洞被水填满了。
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3. The hole in the wall has been repaired by the plumber.
墙上的洞已经被水管工修好了。