Dust, smoke and ash engulf buildingsaround the World Trade Center in New York City, after the collapse of bothtowers on September 11, 2001.
北塔坍塌时尘烟以及灰吞没了世贸中心周围的建筑。
2
Something similar is happening under the shadow of volcanic ash from Iceland: the world seems to have stopped, and the sporting calendar is struggling to cope.
而现在同样的事情也正由于冰岛火山灰的阴影而发生了：世界似乎已经停止，而体育日程还正在努力继续下去。
3
As the ash cloud spread eastwards, northern Europe's airports shut down one by one, stranding millions of passengers, many of them attempting to return from Easter holidays, all over the world.