If you want knowledge,you must toil for it.
　　若要求知识，须从勤苦得。
　　相关例句：
　　1. To gain a complete mastery of English, one must study very hard.
　　要想精通英语就必须刻苦努力.
　　2. The only ladder to assure success is to work hard.
　　确保成功的惟一途径是刻苦努力.
　　3. He's the sort of person who thrives on hard work.
　　他是那种以刻苦工作为乐的人.
　　4. She paces the whole class in studying English industriously.
　　她在刻苦学习英语上给全班同学树立了榜样.
　　5. It's time I carried my intentions of hard work into practice.
　　该是我把想刻苦工作的打算付诸行动的时候了.
　　6. His spirit of assiduous study is worthy of emulation.
　　他刻苦钻研的精神,值得效法.
　　7. The girl's earnest effort counterbalanced her slowness at learning.
　　这女孩的刻苦努力弥补了她在学习上的迟钝.
　　8. He studies hard ( so ) that he might serve the country well.
　　他 刻苦 学习为了能很好地为祖国服务.
　　9. The student tried hard, but his work is mediocre.
　　该生学习刻苦, 但学业平庸.
　　10. Their children study hard while ours never study.
　　他们的孩子学习很刻苦,而我们的孩子从来不学习.