由十年之久的来自南澳洲内陆干空气和一股十分强大的西风带，形成了这场灰尘暴。
Ten very dry years over inland southern Australia and very strong westerlies have conspired to produce these storms.
在陆地上，水的浮力支持消失了，植物不再浸泡在营养液中，空气会使植物变干。
On land, the supportive buoyancy of water is missing, the plant is no longer bathed in a nutrient solution, and air tends to dry things out.
根据美国法律，如果偷渡人员成功到达美国陆地，那些称为“湿足，干足”的古巴人可获准留下来。
Under American law, these so-called "wet-foot, dry-foot" Cubans are allowed to stay if they make it to their objective.
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