1·The presence of MOW equipment either occupying the wrong track or fouling an adjacent track has been the cause of serious accidents in the past.
过去，护路设备占用错误轨道或阻塞相邻车道是造成重大事故的原因。
2·Tiredness and cell phone usage cause serious accidents.
过度疲劳和使用手机会引起严重的交通事故。
3·From time to time there are serious accidents that pollute the air.
时不时地，会有一些严重的空气污染事故发生。
4·Time and time again there are serious accidents that pollute the air.
一次又一次严重事故，污染空气。
5·Time and time again there are serious accidents that pollute the air.
污染空气的严重事故时有发生。
6·Time and time again there are serious accidents that pollute the air.
我们都知道清洁空气对于健康是很重要的。
7·Comedians base their jokes on tragic situations like violent death or serious accidents.
喜剧演员根据悲剧情节诸如暴死，重大事故等来编造笑话。
8·The situation of safety production is severe and very serious accidents occurred frequently.
安全生产形势严峻，重特大事故频发。
9·Car traffic makes serious accidents possible, and this must be avoided in orienteering events.
车辆行驶会造成严重的意外，这是所有定向赛事都必须避免的。
10·One of the work is developing the applications of Marine reactors serious accidents interface system.
本论文的工作之一就是开发了适用于反应堆严重事故的界面系统。