窗户的螺丝松了，所以关不严实。
The screws on the window are loose, so it doesn't close properly.
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loose英 /luːs/|美 /lus/
解释
loose 是形容词，意思是"松动的、不牢固的"，描述螺丝没有固定紧的状态。
The screws on the window are loose, so it doesn't close properly.
loose 是形容词，意思是"松动的、不牢固的"，描述螺丝没有固定紧的状态。