By glassy, the eruption cloud that coarse rock particle forms jams not only engine, still can wear away windshield, attaint plane navigation and communication system.

由玻璃质的、粗糙的岩石微粒构成的火山灰云不仅堵塞发动机，还会磨损挡风玻璃，损坏飞机导航与通讯系统。

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Last year, another Icelandic eruption, of the volcano Eyjafjallajokull, attracted worldwide attention after its ash cloud disrupted air travel across Europe.

去年，艾雅法拉火山喷发的火山灰曾经使欧洲的航空陷入瘫痪，引起了世界的广泛关注。

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Ash particles from the early part of the eruption were especially sharp and abrasive, posing a possible threat to aircraft flying through the cloud.

火山喷发早期出现的火山灰颗粒特别锐利且粗糙，对通过它的飞行器可能造成威胁。

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Macpherson says the ash cloud is not unusual nor is the eruption of the volcano after 200 years of dormancy.

VOA: standard.2010.04.15

Macpherson says there is also no way of knowing whether there could be another eruption that could cause a similar ash cloud.

VOA: standard.2010.04.15

In 1982, a British Airways 747 flew through an ash cloud during the eruption of Mount Galunggung in Indonesia.

BBC: Volcanic ash air shutdown the 'right' decision

The ash cloud resulted from an eruption in the Eyjafjallajoekull area of Iceland.

BBC: Flight ban 'not over-reacting' say Wiltshire scientists

England, one of eight teams yet to travel to the Caribbean for the 12-team tournament, could have flown from Dubai, if their scheduled flight from London had remained grounded because of the volcanic ash cloud produced by an eruption in Iceland.

BBC: England confirm original World Twenty20 travel plans