By comparing two successive displacements of the ball, we can find the change in velocity in the corresponding time interval . 比较球的先后相继的两个位移，就可求出对应于这段时间内的速度变化。
Weak and sick, perpetually coughing, zire buzette, who had not long to live, had nevertheless already buried two wives . 体弱多病，老是咳嗽，寿命不长的齐雷比泽特，竟然先后送了两个老婆入土。
" before " and " after " can suggest place , especially when this is closely associated with time or order in a sequence . “before”和“after”亦可指地点，尤其用于所指的地点是与时间或先后顺序有密切关系时。
Such a measure passed congress in 1913 and again in 1915 only to be nullified by the votes of presidents taft and wilson . 1913年和1915年，国会先后两次通过了这样的法案，只是由于塔夫脱总统和威尔逊总统的否决，才未生效。
Berg in working out a logical sequence of events in the king's aggressive programme places its conquest in 1289 or early 1290 . 伯格在确定国王侵略计划中各项事件的合乎逻辑的先后次序时，把征服异地的年代定为1289年或1290年初。
Five of them had been guests of solit ranch until they had been able to leave, cured or better, and exhausting the vocabulary of tearful gratitude . 在索利托牧场做客的五个病人，先后恢复了健康或者明显好转，感激涕零地离开了牧场。
This list is in no particular order of importance 这个清单排名重要性不分先后
At least 18 times in the four months you ' ve been here 先后有18次越权查阅机密文件
Understand objective and decide on priorities 明白工作目标及能介定先后重要次序。
The project has successively won various honors , e . g . , 项目先后荣获“全电气化示范
