n.散布,分散,消散,驱散
police trained in crowd dispersal
在疏散人群方面受过训练的警察
The police ordered the dispersal of the crowds gathered round the building.
警方命令聚集在建筑物四周的人群散开。
Plants have different mechanisms of dispersal for their spores.
植物传播孢子的方法各不相同。