英语词汇“knock at”的读音、翻译、释义、用法及例句-智慧网

词汇	knock at
释义	knock atknock at1.■打, 捶, 敲He went upstairs and knocked at the door.他上楼敲门。Opportunity knocks at the door only once.机不可失, 时不再来。
随便看	leptonic weak process lepton number lepton number conservation leptonomorphology lepton polarization lepton propagator Leptopentacta leptophonia leptophos leptophragmata leptophyll leptophyllous Leptopodidae Leptopodoidea Leptopodomorpha leptoprosopic leptoprosopy leptoquark leptorrhine leptoscope Leptosoira pyrogenes Leptosol leptosomatic leptosome leptospermone

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