He was careful and diligent. I was all over the place.

　　他細心且勤奮，我則稀里糊涂。

　　The historical research was impressively diligent.

　　該項歷史研究非常地認真、徹底。

　　Meyers is a diligent and prolific worker

　　邁耶斯是個勤奮多產(chǎn)的工人。

　　She made a diligent effort to learn English.

　　她勤奮地學習英語。

　　After a diligent search, he found the key under his pillow.

　　經(jīng)過仔細尋找，他在枕頭下面找到了鑰匙。