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重要的是要在最后一个螺母上安装一个防松垫圈，否则它会逐渐变松。
It's important to put a lock washer on that last nut, or it can work loose.
《柯林斯英汉双解大词典》
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她的衣服变松了，看来是减肥了。
Her dress has become loose, and she appears to have lost weight.
youdao
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再过一天这个就会变松脆。
Another day and this one would be crunchy.
youdao