All over the cloud, the number of ice crystals multiplies - and soon the whole cloud might be ice.
云层中的冰晶体数量会倍增,不久整块云层都会成为冰层。
So far, the ash has only deferred some small domestic flights; larger planes are able to fly over the cloud.
目前,火山灰仅导致一些短距离的国内航班延迟;大型飞机可以在火山灰云上方正常飞行。
Although the wind was still howling, the couple could hear airplanes flying somewhere over the cloud cover-one every 50 minutes or so.
虽然狂风仍在呼啸,夫妇俩却听见了飞机从云层之上穿过的声音,大概每50分钟就有一架。
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