名词
中文翻译：引擎敲击声
同义词：
['engine noise', "engine knocking例句：1. The car's engine was making a loud knocking sound when we arrived.（我们到达时，汽车的引擎发出响亮的敲击声。）"]
例句：
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1. The car's engine was making a loud knocking sound when we arrived.
我们到达时，汽车的引擎发出响亮的敲击声。
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2.The mechanic suspected that the engine had been damaged during the accident.
机械师怀疑事故中发动机受损了。
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3. The engine knocking was causing the car to vibrate violently.
发动机的敲击声导致汽车剧烈震动。