He was careful and diligent. I was all over the place.
他細心且勤奮，我則稀裡糊塗。
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.
經過仔細尋找，他在枕頭下面找到了鑰匙。