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	preinjector pre-inlet valve preinsecticide pre-inspection check preinstall preinstallation preinstallation test preinsula pre-integral pre-interpretation pre-intubation preparation preinvasion preinvasive preinvasive carcinoma of penis pre-investment activity preinvestment assistance preinvestment fund preinvestment program pre-investment programmes preinvestment project pre-investment studies preiodic type preionization preionization technique pre-ionizer

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