21.Everything has its time and that time must be watched.

　　万物皆有时，时来不可失。

　　22.Take time when time cometh,lest time steal away.

　　时来必须要趁时，不然时去无声息。

　　23.When an opportunity is neglected,it never comes back to you.

　　机不可失，时不再来；机会一过，永不再来。

　　24.Make hay while the sun shines.

　　晒草要趁太阳好。

　　25.Strike while the iron is hot.

　　趁热打铁。

        26.Work today,for you know not how much you may be hindered tomrrow.

　　今朝有事今朝做，明朝可能阻碍多。

　　27.Punctuality is the soul of business.

　　守时为立业之要素。

　　28.Procrastination¹ is the thief of time.

　　因循拖延是时间的大敌；拖延就是浪费时间。

　　29.Every tide hath ist ebb².

　　潮涨必有潮落时。

　　30.Knowledge is power.

　　知识就是力量。