before and after the event meaning in English

事前事后

The prediction process for linyi ms5 . 0earthquake and the variation of its gravity field before and after the event
0级地震前后的重力场变化及预报过程
They were asked their views on a range of issues before and after the event , including how much they liked or disliked german , french , polish , italian , british and spanish people
讨论开始前和结束后，参与者均被问及对一系列问题的看法，如他们有多喜欢（或多不喜欢）德国人、法国人、波兰人、意大利人、英国人和西班牙人等等。
Spectators to the national day fireworks display are advised to make use of public transport as some roads on both sides of the harbour will be closed to vehicular traffic before and after the event and parking spaces will be reduced
由于维港两岸部分道路将于烟花汇演前后封闭，而泊车位数量亦会减少，警方呼吁前往观赏烟花的人士尽量利用公共交通工具。
The weather was extraordinarily beautiful that day although it rained almost every day immediately before and after the event . the guests thus commented , i cant believe what a beautiful day it is ! this is supposed to be the rainy season in tokyo
餐宴前后几天几乎都在下雨，但活动当天却变得风和日丽，来宾们纷纷惊叹道：这时应该是东京的雨季，真不敢相信天气竟然这么好！