knock

名词 knock:

the sound of knocking (as on a door or in an engine or bearing)

同义词：knocking

negative criticism

同义词：roast

a vigorous blow

同义词：bash, bang, smash, belt

a bad experience

the act of hitting vigorously

同义词：belt, rap, whack, whang

动词 knock:

deliver a sharp blow or push :"He knocked the glass clear across the room"

同义词：strike hard

rap with the knuckles

knock against with force or violence

同义词：bump

make light, repeated taps on a surface

同义词：tap, rap, pink

sound like a car engine that is firing too early

同义词：pink, ping

find fault with; express criticism of; point out real or perceived flaws