first mate

汉语翻译

英语解释：

名词 first mate:

1. the officer below the master on a commercial ship
   同义词：mate

例句：

1. At thirty, he signed on as first mate with a cargo ship.
   他30岁时受雇于一艘货船当了大副。
2. The first mate was studying to become a master.
   大副正在学习准备当船长。