| 单词 | knocking |
| 释义 | Word Frequency knocking(ˈnɒkɪŋ) noun 1. sharp rapping with the knuckles, a hard object, etc, esp to capture attention They heard furious knocking coming from downstairs. There was a loud knocking. They were wakened by a loud knocking at the door. 2. the sound that an engine or bearing makes as a result of wear or faulty combustion There was a knocking coming from under the bonnet. |
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