ash cloud

基本解释

If the ash cloud were to drift in another direction flights could be sent around or above it.
届时如果火山灰云飘向另一个方向，航班将可以在其周围或上方飞行。
International flights to and from Argentina and Uruguay have been disrupted again by a huge ash cloud caused by an ongoing volcanic eruption in southern Chile.
进出阿根廷和乌拉圭的国际航班因智利南部一座火山持续喷发所形成巨大的火山灰云层而再次被扰乱。
Transfixed by images of the ash cloud on a new visualisation system created for the purpose since Eyjafjallajokull’s eruption, they set up a “crisis cell” and sent out changes to flight plans.
自从艾雅法拉火山爆发后，一种新的可视化系统应运而生。航空界被该系统上火山灰云的图像震撼，建立了“危机单元”并变更飞行计划。

Macpherson says the ash cloud is not unusual nor is the eruption of the volcano after 200 years of dormancy.
Macpherson says there is also no way of knowing whether there could be another eruption that could cause a similar ash cloud.
Meteorologists and aviation authorities are monitoring wind direction and the ash cloud's movement from Iceland to determine where and when to shut down airspace in Europe.

If the ash cloud were to drift in another direction flights could be sent around or above it.
ECONOMIST: Iceland's volcanic eruption