蝶型螺母像是种小的螺旋扭用来把什么给妞紧常见于某些地方的水龙头上
The butterfly-shaped nut, which looks like a small screw, is commonly found on faucets in some places. What is it used to hold tightly
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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