The reason why the dust cloud has grounded planes is because volcanic ash can clog up aeroplane engines and cause serious damage
灰云让航班不得不滞留在地面，是因为火山灰会阻塞飞机的发动机并且导致严重损坏。
The microscopic dust and glass particles in volcanic ash can act like the smog particles that hover above cities and change the color of sunrises and sunsets.
火山尘埃中微小的粉尘与玻璃粒子就像飘浮在城市上空的烟雾颗粒，改变了日出日落的色彩。
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