1. （使）分散;（使）散布
When something disperses or when you disperse it, it spreads over a wide area.
e.g. The oil appeared to be dispersing...
油好像在扩散。
e.g. The intense currents disperse the sewage...
急流冲散了污水。
2. （使）散开;分散;驱散
When a group of people disperses or when someone disperses them, the group splits up and the people leave in different directions.
e.g. Police fired shots and used teargas to disperse the demonstrators...
警方鸣枪并使用催泪弹来驱散示威者。
e.g. The crowd dispersed peacefully after prayers.
祈祷仪式过后，人们静静散去。