thin是什么意思

　　例句：

　　The dog was painfully thin.

　　那條狗瘦得可憐。

　　The sheets have worn thin.

　　床單已經磨薄了。

　　She was pathetically thin.

　　她那時瘦弱得可憐。

　　He has a large body, but thin legs.

　　他身寬腿細。

　　His mouth tightened into a thin line.

　　他的嘴抿成了一道細縫。