他在挠蚊子咬的包。

He was scratching at his mosquito bites.

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He was scratching at his mosquito bites.

scratching 是动词 scratch 的现在分词形式,scratch 的意思是"抓、挠、刮",指用指甲或尖锐物体轻轻刮擦皮肤表面以缓解痒感。

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