No one can be more diligent than he.
没有人比他更勤奋的了。
a very sober and hard-working young man
认真而勤奋的年轻人
a quiet, studious child.
一个安静又勤奋的孩子
a painstaking student, worker, etc
勤奋的学生、 工人等.
He is a very diligent student.
他是一个勤奋的学生。
I was a conscientious student.
我是个勤奋的学生。
a diligent worker, pupil, etc
勤奋的工作者、 学生等
Laborious study or meditation.
刻苦的学习勤奋的学习或思考
A diligent detective investigates all clues.
勤奋的侦探会调查所有的线索。
Yes, I do. She is a diligent student.
是的，我认识。她是个勤奋的学生。
Extremely careful and diligent work or effort.
努力的极度细心和勤奋的工作或努力
Hard work is a condition of success.
勤奋是成功的前提。
Hard work is an important factor in success.
勤奋是成功的重要因素。
His offspring are diligent and intelligent.
他的后代既勤奋又聪明。
Hard work is a sure avenue to success.
勤奋是可靠的成功之道。
He was appreciative of Paul's diligence.
他赏识保罗的勤奋。
They is hard work farmer.
他们是勤奋工作的农民。
Trying (The Hard Work) . This comes to the second thing that stops students from getting A's: hard work.
努力（勤奋）这是妨碍学生得"A"的第二个问题：勤奋。