Pony Express formed to carry mail to the Wild West.
驿马快信制度成立,提供将邮件快递到荒芜的西部的业务。
Pony Express disbanded. The telegraph took over.
驿马快信制度取消,取而代之的是电报。
pony express:驿马快信的制度
pontoon 浮桥 | pony express 驿马快信的制度 | pony 小马