捕鼠（rat的现在分词形式）；
4. ratting在线翻译
1. 拍击,摇动：合理化,有理化(数学) rationalization | 拍击,摇动 ratting | 生煤 raw coal
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1. ratting的翻译
noun
1. to furnish incriminating evidence to an officer of the law (usually in return for favors)
Synonym: informing