英语释义
1
n the sound of knocking (as on a door or in an engine or bearing)
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n the act of hitting vigorously
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v deliver a sharp blow or push :"He knocked the glass clear across the room"
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v rap with the knuckles
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v knock against with force or violence
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v make light, repeated taps on a surface
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v sound like a car engine that is firing too early
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v find fault with; express criticism of; point out real or perceived flaws