名词
中文翻译：缺口
同义词：
['notch', 'notch-line', "notch-mark例句：1. The car's engine has a notch in the center.（这辆车的引擎中心有一个缺口。）"]
例句：
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1. The car's engine has a notch in the center.
这辆车的引擎中心有一个缺口。
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2. The tree has a notch on its trunk.
这棵树的树干上有一道缺口。
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3. The fence had a notch cut into it for easy climbing.
这面篱笆被切了一个缺口，方便爬。