knocking的中文意思、音标与词形变化

[机] 爆震内燃机

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