1) all the time; constantly--无时无刻

2) donkey’s years猴年马月

3) Nothing can be done without time just as no one can live without air--没有时间，我们做不成任何事;正如没有空气，我们根本不能生存。

4) A hero is nothing but a product of his time--时事造英雄。

5) One today is worth two tomorrows--一个今天等于两个明天。

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6) Time is like the water sucked in sponge: if you squeeze, you can always get some--时间象水，只要去挤总是有的。

7) accumulate through long years--日积月累

8) at the end of one’s rope--日暮途穷

9) day and night--日日夜夜

10) fast-changing--日新月异

11) night and day; day in and day out--日以继夜

12) Every minute counts--分秒必争

13) at a critical moment--千钧一发

14) throughout the ages--千秋万代

15) once in a blue moon--千载难逢

16) year after year; from year to year--穷年累月

17) like the sun setting beyond the western hills; on the wane--日落西山

18) leap year--闰年

19) in an instant; in a twinkle--霎时间

20) the first ten days of a month--上旬