accident

I met her quite by accident (= completely by accident ) ..我遇见她完全是偶然。

The discovery was made almost by accident..这项发现几乎纯属意外。

The pilot, whether by accident or design (= whether it was planned or not planned ) , made the plane do a sharp turn..不知是有意还是无意，那名飞行员让飞机来了个急转弯。

traffic accident,交通事故

by accident,偶然；意外地

car accident,车祸；交通事故

accident insurance,意外保险；事故保险

accident prevention,事故预防；安全措施

fire accident,火灾事故；失火

accident rate,意外伤害率

road accident,交通事故

fatal accident,死亡事故

nuclear accident,核事故

industrial accident,工伤事故；工业事故；劳动事故

have an accident,vi. 出事故

cerebrovascular accident,[医]脑血管意外（等于中风）；脑血管伤害

personal accident insurance,个人人身意外伤害保险

collision accident,碰撞事故；空中相撞事故

vehicle accident,交通事故

aviation accident,航空事故；飞机失事；飞行事故

transportation accident,交通事故

minor accident,轻微事故；小事故

unexpected accident,不能预料的事故