【林湘凌】評論
knock out 擊倒拳擊比賽常用~簡寫成K.O.
【97141346】評論
knock out 擊倒原來是KO的原型，受教了
【夏雪】評論
knock up (使)精疲力盡，賺得，(網球羽毛球等)賽前練習knock back (運動)把...打回去，(飲料)猛喝,使吃驚
【業精於勤，事立於豫】評論
(考片語)The western coalition is trying to ______ Libya's air-defense system to protect civilians and help rebel forces. (西方聯盟正試圖摧毀利比亞的防空系統以保護老百姓及幫助反抗軍。)(A) knock out 摧毀。(B) knock up 敲門喚醒；賽前練習。(C) knock back 豪飲；回敲。(D) knock around 閒逛。