hardworking;diligent;studious;hit the books;lucubrate ;

I hadn't studied hard at college and so I had a rude awakening after I began to work.
我在大学时念书不用功,开始参加工作后才后悔莫及.
来源:《现代汉英综合大词典》We did have to urge the students along in the last few weeks before their examination.
在临考前的几个星期,我们必须激励学生用功.
来源:《简明英汉词典》Conditions are good in school. It's inexcusable not to study hard.
学校环境好, 不用功念书可说不过去.
来源:《现代汉英综合大词典》The school boy took it ill that the teacher reproved him for idleness.
这个小学生心里不痛快,因为老师责备他不用功.
来源:《简明英汉词典》"Getting nowhere fast," pronounced Crosby, "that's what we're doing."
克罗斯比断言说:“我们一无所获,在做无用功。”
来源:《柯林斯高阶英汉双解学习词典》Diligent students occasionally fail this subject.
9.occasionally adv.偶尔,间或用功的学生在这门功课上偶尔也不及格。
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