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	monomorphic endomorphism monomorphism monomorphous monomotor monomotor drive Monomoy monomphalus monomultivibrator monomyaria monomyarian monomycelial mononephrous mononetflurazone mononeuritis mononeuropathy Monongahela series monongial sorus mononitraniline mononitrate mononitration mononitride mononitro-benzene mononitro-compound mononitro-derivative mononitromethane(喷气燃料)

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