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	denaturalization denaturalize denaturant denaturation denaturation map denaturation of membranous labyrinth denaturation of nuclear fuel denaturation temperature denaturation theroy denature denatured denatured alcohol denatured antigen denatured DNA denatured fuel denatured globulin bodies denatured globulin body stain denatured hemoglobin denatured protein denatured salt denatured test denaturing agent denaturing gradient gel electrophoresis denaturization denaturize

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