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	wheelsman wheel spacer wheel spad wheelspan wheel spider wheel spike wheelspin wheel spin wheel-spin wheel spindle wheel spinner wheel spinning wheel spoke wheel stage wheel stand wheel stand slide bed wheel static interference wheel station wheel steel wheel step wheel stretcher wheelstretcher wheel stretching machine wheel stud wheel swing arm

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