knock-on effect

常见例句

• When I fell I got a terrible knock on the head.
  我摔倒時頭撞得很厲害。
• Jim sat up when he heard the knock on his bedroom door.
  吉姆聽到敲寢室門的聲音時便坐了起來。
• Knock on the door before you enter.
  進屋之前要先敲門。
• I heard footsteps, then a knock on the door.
  我聽到腳步聲，隨後是敲門的聲音。
• When I fall I get a terrible knock on the head.
  我摔倒時頭撞得很厲害。
• He got a nasty knock on the head when he fell.
  他跌倒時頭撞得很厲害。
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