英语语法分析

Originally used as an outpost to keep an eye on Napoleon in exile, Ascension Island, between South America and Africa, was a busy Atlantic waystation in Darwin's day.

原本被作为监视流放中的拿破仑的前哨，阿森松岛位于南美洲与非洲之间，在达尔文时代是大西洋一个繁忙的中转站。