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	coral limestone Corallimorpharia corallin Corallinaceae corallinate coralline coralline alga coralline algae corallita corallite coralloid corallum coral mud coral pinnacle coral polyp coral red coral reef coral reef coast coral reef ecosystem coral reef fishing ground coral-reef lagoon coral reef oil pool coral reef shoreline coral ring coralroot

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