duststorm英dʌs'tɔːm美dʌs'tɔːmBNC¹⁷³⁹⁹⁵⁺² 基本例句 n.尘暴大灰暴 Results:The annual happen times of the northwest dust area presents slowly descend tendency, but the situation of the duststorm defence is still critical. 结果：建国以来西北沙尘区沙尘年发生次数总体上呈缓慢下降趋势，但防御沙尘天气的形势依然严峻。 fabiao