wear-weary-worn

wear
由穿的衣服引申到磨损的意思
weary
He managed a weary smile.
他勉强挤出了一丝疲倦的笑容。

worn
Worn is used to describe something that is damaged or thin because it is old and has been used a lot.
Worn rugs increase the danger of tripping...
磨损的小地毯会使人更容易绊倒。

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