First, Morgan retook the island of santa catalina from the Spanish.

首先，摩根从西班手中夺回了圣卡琳娜岛。

From santa catalina, the pirates left for Panama, approaching by sailing up the Chagres river.

海盗们从圣卡琳娜出发前往巴拿马，沿着查格雷斯河逆流而上。