1. The fog is heavy.
    雾很大.

2. The fog disrupted airline schedules.
    这场大雾扰乱了航空公司的时刻表.

3. After a second crew was assigned, the ship was again lost in a fog bank.
    他又派去了一组船员，之后这船又在大雾中迷失了方向。

4. If no accidents occur on the way, like punctured tyres, diversions of traffic, sudden descent of fog, they will be on time.
    要是路上没有发生如爆胎、改道、突然起雾等意外事故，他们决不会迟到。