置若罔闻 turn a deaf ear to; act as if one had not heard; close [seal; stop; shut] one's ears to; give [keep; pay] no heed to; ignore completely; keep quiet on; let slide like water off a duck's back; pay no attention to; take no heed [notice] of; treat... with indifference 对朋友的痛苦置若罔闻的人, 对个人的利益非常注意。 men are awake enough to their own interests, who turn a deaf ear to their friends' distress. 我多次劝告, 他都置若罔闻。 i cautioned him many times but he paid no heed
置身局外 keep aloof from; keep out of the business; stay [remain] aloof from the affair; refrain from getting involved; refuse to be drawn into the matter; fold one's arms
Traditional chinese lunisolar calendar and its intercalation 中国传统夏历及其置闰
By doing this , we are adding too much . hence , this extra day will not be added every hundred years , and it will be added again every four hundred years . for example , we have february 29 in the years 1988 , 1992 , 1996 , 2000 , 2400 , 2800 , etc . , but there will be no february 29 in the years 1997 , 1998 , 1999 and 1800 , 1900 , 2100 , 2200 , etc . this is called the 心思细密的读者会注意到,四年一闰即每年平均有365 . 25日,比一年的真实日数多了0 . 0078日,误差虽小,但数百年累积下来便不得了,所以历法规定,可以被100除尽的年份不置闰例如1700 1800 1900 ,但可以被400除尽的年份则保持置闰例如2000 2400 2800 ,因此,每400年便少了3个闰年,即平均一年少0 . 0075日,每年误差为0 . 0003日,或每3000年误差不多于一天。