1、Deliberate slowly,执行 promptly.慢慢酌量，快快行动。
2、Dexterity comes by experience.熟练来自经验。
3、Diligence is the mother of good fortune.勤勉是好运之母。
4、Diligence is the mother of success.勤奋是成功之母。
5、There is no royal road to learning.求知无坦途。
6、A young idler, an old beggar.少壮不努力，老大徒伤悲。
7、Clumsy birds have to start flying early.笨鸟先飞。
8、A letter from home is a priceless treasure.家书抵万金。
