高浓度的火山灰一旦被吸入喷气发动机就会融化，并且造成引擎故障，因此喷气式飞机是不允许在火山灰云层中穿行的。
A high concentration of ash ingested by a jet engine can become molten and cause engine failure, which is why planes are not allowed to fly through the cloud.
灰白色的盐碱地、褐色的泥土和锈迹斑斑的绿色灌木构成了前景色，背景则融化在一片灰紫色中。
The whitey-gray of the alkali-patches, the brown of the dry earth, and the rusty green of the sagebrush filled the foreground, melting in the distance into a purple-gray.
第二次喷发融化了大量的冰川冰，使岩浆冷却碎裂成砂质玻璃微粒，被上升的火山灰柱带走。
The second eruption, however, melted a large amount of glacial ice which then cooled and fragmented lava into gritty glass particles that were carried up with the rising volcanic plume.
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