His father is a Marine biologist.

他父亲是位海洋生物学家。

He is a Marine biologist.

他是一位海洋生物学家。

Carlos is a Marine biologist form Yale.

卡洛斯是来自耶鲁的海洋生物学家。

How did you come to be a Marine biologist?

你是怎么成为海洋生物学家的？

Marine biologist Phil Hastings is their keeper.

海洋生物学家菲尔·黑斯廷斯(Phil Hastings)就是这些鱼类的守护神。