knocking
名词 knocking:
the sound of knocking (as on a door or in an engine or bearing)
同义词:knock
动词 knock:
deliver a sharp blow or push :"He knocked the glass clear across the room"
同义词:knock, strike hard
rap with the knuckles
同义词:knock
knock against with force or violence
make light, repeated taps on a surface
sound like a car engine that is firing too early
find fault with; express criticism of; point out real or perceived flaws
同义词:knock, criticize, criticise, pick apart