名词
中文翻译：后门
同义词：
['back room', 'backdoor']
例句：
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1. The oldhouse had a back hole that led tothe cellar.
这所老房子有一个后门通向地下室。
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2. He found a backhole in the wall and crawled throughit.
他发现墙上有个后门，就爬了过去。
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3. The thief used theback hole to escape from the police.
小偷利用后门从警察那里逃跑了。