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	starch splitting starchsplitting starch storage crop starch sugar starch sweet corn starch syrup starch table starch test starch value starch value changing starchy starchy chloroplast starchy corn starchy food starch yielding plant starchy taste starchy vegetables starchy wheat star circuit star clock star cloud star cluster star color star communication network star compass orientation

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