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	magnetic bow magnetic brake magnetic braking magnetic bridge magnetic bubble magnetic bubble computer magnetic bubble detection magnetic bubble device magnetic bubble domain magnetic bubble material magnetic bubble memory magnetic bubble storage magnetic cancellation magnetic canopy magnetic capacity magnetic card magnetic card code magnetic card device magnetic card file magnetic card memory magnetic card reader magnetic card-selectric composer magnetic card-selectric typewriter magnetic card storage magnetic card system

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