名词
中文翻译：凹槽
同义词：
['notch', 'groove', 'notch', "notch例句：1. The car's engine is located in the center of the chassis", 'with a fossa subarcuata for the spark plug.（汽车的发动机位于底盘中心，有一个用于火花塞的凹槽。）']
例句：
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1. The car's engine is located in the center of the chassis, with a fossa subarcuata for the spark plug.
汽车的发动机位于底盘中心，有一个用于火花塞的凹槽。
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2. The tool has a smooth surface and a deep notch at its base.
这个工具表面光滑，底部有一个深凹槽。
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3. The engineer carefully measured the dimensions of the notch and marked it on the drawing.
工程师仔细测量了凹槽的尺寸并在图纸上做了标记。