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。
well begun is half done 好的开始是成功的一半。
To save time is to lengthen life.节省时间就是延长生命。
To him that does everything in its proper time,one day is worth three.事事及时做，一日胜三日。
Time tames the strongest grief.时间能缓和极度的悲痛。
Time is money.一寸光阴一寸金。
The morning sun never lasts a day.好景不常；朝阳不能光照全日。
Take time when time cometh,lest time steal away.时来必须要趁时，不然时去无声息。