音標(biāo)發(fā)音英式音標(biāo) [n?k]美式音標(biāo) [nɑ?k]國際音標(biāo) [n?k]英式發(fā)音 美式發(fā)音 基本解釋vi. 敲；打；敲擊 vt. 敲；打；敲擊；批評 n. 敲；敲打；爆震聲詞源解說 直接源自古英語的cnocian；最初源自古挪威語的knoka，意為打擊，打。同根派生n性質(zhì)的同根詞knocker：門環(huán)；敲擊者；吹毛求疵的人。knock相關(guān)詞用法辨析n. (名詞)knock用作名詞的基本意思是“狠狠的一擊,打擊”,用于比喻可指“不幸,挫折,艱苦”,引申可指“敲擊聲,敲擊信號”。 knock是抽象名詞,但卻可數(shù),可加不定冠詞修飾,也可用復(fù)數(shù)形式,表示復(fù)數(shù)概念。 knock后接at〔to〕的介詞短語表示側(cè)重敲擊的對象; 接on的介詞短語側(cè)重敲擊的位置。 v. (動詞)knock的基本意思是用手、拳等硬物“敲打”,指出聲地、連續(xù)地猛擊,引申可指發(fā)出敲擊或爆裂的聲響。還可表示“批評”“數(shù)落”“非難”。 knock可用作及物動詞,也可用作不及物動詞。用作及物動詞時,可接名詞或代詞賓語,也可接以形容詞充當(dāng)補(bǔ)足語的復(fù)合賓語?？捎糜诒粍咏Y(jié)構(gòu)。 knock是瞬間動詞,如表示重復(fù)動作,須用進(jìn)行體。 knock使用方法knock詳細(xì)辨析英漢例句用作名詞 (n.)The hard knock made her cry.重重一擊把她打哭了。用作動詞 (v.)用作不及物動詞: S+～(+A)Please knock before entering.進(jìn)來先敲門。用作及物動詞: S+～+ n./pron.The children were knocking the bottom of the box.孩子們在敲箱子底。用作賓補(bǔ)動詞: S+～+ n./pron. + adj.He knocked me flat with one punch.他一拳把我打倒。knock更多例句詞組短語用作名詞 (n.)動詞+～get the knock 被解雇,遭到失敗hear a knock 聽到敲門聲receive a knock 受到挫折stand the knock 忍受指責(zé)take a knock 受到嚴(yán)重?fù)p失形容詞+～gentle knock 輕輕的敲門聲knock更多詞組英英字典劍橋英英字典(MAKE NOISE) to repeatedly hit something, producing a noise(HIT) to hit, especially forcefully, and cause to move or fall(CRITICIZE) to criticize, especially unfairly(NOISE) a sudden short noise made when someone or something hits a surface(HIT) the act of something hard hitting a person or thing柯林斯英英字典 If you knock on something such as a door or window, you hit it, usually several times, to attract someone's attention. Knock is also a noun. knocking If you knock something, you touch or hit it roughly, especially so that it falls or moves. Knock is also a noun. To knock someone into a particular position or condition means to hit them very hard so that they fall over or become unconscious. To knock a particular quality or characteristic out of someone means to make them lose it. If you knock something or someone, you criticize them and say unpleasant things about them. If someone receives a knock, they have an unpleasant experience which prevents them from achieving something or which causes them to change their attitudes or plans. to knock someone or something into shape&rarrsee shape knock劍橋字典knock柯林斯字典專業(yè)釋義能源科學(xué)技術(shù)爆震The results show that the knock frequency band of compound combustion is between 5 and 10 kHz.負(fù)荷和預(yù)混合燃料性質(zhì)對復(fù)合燃燒爆震頻率帶影響不大。交通運(yùn)輸工程爆震On this base, we designed the ECU hardware and software of the knock feedback controlling ignition system.分析了爆震以及爆震對發(fā)動機(jī)的影響,并在此基礎(chǔ)上實(shí)現(xiàn)了爆震反饋汽油機(jī)點(diǎn)火的電控單元的硬件與軟件的設(shè)計。敲擊物理學(xué)敲擊術(shù)爆震敲擊聲