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.
破损的地毯使人更容易绊倒。
If someone looks worn, they look tired and old.
She was looking very haggard and worn.
她看上去非常憔悴而疲倦。
Worn is the past participle of wear.