名詞 knocking:

1. the sound of knocking (as on a door or in an engine or bearing)
   同義詞：knock

動詞 knock:

1. deliver a sharp blow or push :"He knocked the glass clear across the room"
   同義詞：knock, strike hard
2. rap with the knuckles
   同義詞：knock
3. knock against with force or violence
   同義詞：bump, knock
4. make light, repeated taps on a surface
   同義詞：tap, rap, knock, pink
5. sound like a car engine that is firing too early
   同義詞：pink, ping, knock
6. find fault with; express criticism of; point out real or perceived flaws
   同義詞：knock, criticize, criticise, pick apart

1. Don't enter without knocking.
   進屋前先敲門。
2. He's always knocking the way I do things.
   他總是挑剔我做得不對。
3. Can you go to the door? Someone's knocking.
   你到門那兒去看看好嗎？有人敲門。
4. Who is knocking at the door?
   誰在敲門?
5. The bully punched the young lad in the back, who turned round and paid him back with interest by knocking him out.
   那暴徒對著年輕小伙子的背猛擊一拳，那小伙子卻轉(zhuǎn)過身去加倍回擊，將他擊倒。
6. Someone is knocking at the door.
   有人在敲門。
7. If the engine is heard to be knocking at any time, it must be slowed down at once.
   不論什么時候如果聽到發(fā)動機有撞擊聲，都必須立刻降低運轉(zhuǎn)速度。
8. Please do not enter before knocking on the door.
   進來前請先敲門。