例句：

　　The dog was painfully thin.

　　那條狗瘦得可憐。

　　The sheets have worn thin.

　　床單已經(jīng)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(xì)。

　　His mouth tightened into a thin line.

　　他的嘴抿成了一道細(xì)縫。