名词 accident:

1. an unfortunate mishap; especially one causing damage or injury

2. anything that happens suddenly or by chance without an apparent cause

accidentn.事故；意外；偶然；造化accident trip事故跳闸accident boatn.救生艇accident harm事故危害accidentproneadj.易出事故的accident risk事故责任accident bell事故铃accident type事故类型accident free无事故accident tree事故树accidentphoneadj.特别容易出事故的; 常发生意外的

1. Drinking is a principal cause of traffic accidents.
   酗酒是交通事故的主要原因。
2. Such accidents should not happen again.
   不可以再发生这种事故了。