It is used for hanging flags or clothes.

挂旗子用的、晾衣服用的。

youdao

Several businesses tied red, white, and blue ribbons on their doors and had American flags hanging in their windows.

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When flags were hanging from front porches all across America, and strangers became friends.

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State flags still hanging from the low ceiling are a testament to ex-college kids' fervour during the recent "March Madness" of basketball season.

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