Sometimes visibility drops to less than 1 kilometer, causing serious traffic jams, flight delays and highway closures.

有时，能见度下降到1千米以下，引发了严重的交通阻塞，航班延误和公路关闭。

youdao

Sometimes visibility drops to less than 1 kilometer, causing serious trafficjams, flight delays and highway closures.

有时，能见度下降到1千米以下，引发了严重的交通阻塞，航班延误和公路关闭。

youdao

India's Civil Aviation Minister has said the weather and visibility were good, and there were no apparent signs of trouble when the flight landed.

VOA: standard.2010.05.23