除了这些关注点外，爱荷华州并不处于新的沙尘风暴的边缘。
Despite the concerns, Iowa is not on the brink of becoming a new Dust Bowl.
风会搅动沙尘，但风暴前端在此区域需是上升流。
Winds can stir dust, however, when storm fronts arise in the region.
中国中央气象台在沙尘暴到达北京前的几个星期就能预见到，但是风暴的威力有时是惊人的。
The Chinese Central Weather Station can forecast a sandstorm some weeks before it arrives in Beijing, but the strength of the storm sometimes surprises people.
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