I had to turn around to go home lackadaisical.

　　我只好無精打采的轉(zhuǎn)身回家。

　　The food was nice enough but the service was rather lackadaisical.

　　菜挺好，可服務(wù)不熱情。

　　As a senior high school'student, I decided to share the lackadaisical summer with you.

　　作為一名高一學(xué)生，希望與大家共享懶懶夏日。

　　A lackadaisical approach to his studies.

　　他在學(xué)習(xí)方面的懶散態(tài)度。

　　Lao Wang is very serious with work, so do not be lackadaisical.

　　老王干活可較真兒啦，你可別馬馬虎虎的。