debris cloud

例句：

1. 1.The debris cloud above the crash site was a reminder of the tragedy.
   坠机地点上方的残骸云是这场悲剧的提醒。
2. 2.The debris cloud was so dense that it blocked out the sun for hours.
   残骸云如此密集，以至于数小时都遮蔽了太阳。
3. 3. The debris cloud was so thick that it made it difficult to see beyond it.
   残骸云如此浓密，以至于难以看到其之外的任何东西。