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	sediment grade size sediment grain sediment humus sediment hydrograph sedimentin sediment incrustation sediment index sediment induced deformation sedimenting boundary sediment in suspension sediment intrusion sediment-laden flow sediment-laden river sediment-laden stream sediment load sediment load sampling sediment longitudinal transport sediment measurement sediment motion sediment movement sediment-moving incipient velocity sedimentogenesis sedimentograph sedimentography sedimentologic

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