旧窗帘因为年久失修而松垮地垂着。

The old curtains were sagging loosely due to years of wear.

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The old curtains were sagging loosely due to years of wear.

sagging 是动词 sag 的现在分词形式。sag 的意思是"下垂、松垂",通常用来描述因重力或缺乏支撑而向下弯曲或松弛的状态。

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