Lost time is never found again. 失去的时间找不回。
　　
　　2. No one call back yesterday. 昨日不复来。
　　
　　3. Time is money. 一寸光阴一寸金。
　　
　　4. Busiest man finds the most time. 最忙的人享有最多的时间。
　　
　　5. Time and tide wait for no man. 岁月不等人。
　　
　　6. A lazy youth， a lousy age. 少壮不努力，老大徒伤悲。
　　
　　7. A diligent person values his time.勤奋者珍惜时间。
　　
　　8. A lazy person loses his time. 懒惰者丧失时间。
　　
　　9. An inactive person gives up his time. 无为者放弃时间。
　　
　　10. Yesterday and the day before yesterday are not like today. 昨天和前天均不似今天。