The first mate was studying to become a master.

大副正在学习准备当船长.

《现代英汉综合大词典》

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.

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First mate: Yes , Captain. Look , Captain. What an exciting scene out there!

大幅: 是, 船长. 看那外面只有多热闹啊!

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They think that the notes about the first mate were written by someone else.

他们认为关于大副的注解是由别人写的.

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He was promoted to first mate.

他被提为大副.

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The first mate will be in charge when the captain is away.

船长不在时将由大副负责.

辞典例句

The first mate helps the captain.

大副协助船长.

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When the captain felt sick, the first mate took charge of the ship.

船长生病后, 大副接管了这艘船.

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