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	donor parent donor pretreatment donor's cornea donor selection donor site donor solute donor solvent donor-specific blood transfusion donor splicing site donor state do not care a dime do not care a stiver do not drop do not feel like eating do-nothing donothing do nothing but do-nothing instruction donothingism do-nothing operation do not import column do not lift a hand do not load near inflammables do not see the fun of Do not stake on top

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