名词
中文翻译：下门凹槽
同义词：
['lower door recess', 'lower door recession']
例句：
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1.The car's lower gate recess is filled with sand and gravel.
这辆车的下门凹槽里装满了沙子和砾石。
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2. The lower gate recess was designed to protect the engine from dust.
下门凹槽的设计是为了保护发动机免受灰尘的侵害。
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3. The lower gate recess is where the engine oil is stored during maintenance.
下门凹槽是存放发动机油的地方，用于维护时使用。