During the 19th century, cholera spread across the world from its original reservoir in the Ganges delta in India.
在19世纪，霍乱在世界各地的蔓延源自印度恒河三角洲的最初宿主。
2
Introduced by French colonials, as a game called poque, it soon spread from its original base in the Mississippi delta.
扑克源于一种叫做poque的游戏，由法国殖民者引进，起先在密西西比三角洲流行，然后迅速传播。
3
After analysis of the isopach maps of restraining barrier thickness in each layers, four spread models of the restraining barriers in shallow water delta facies of the study area were built.