I was in electrical engineering major, because there was no computer science.

专业是电子工程，因为当时没有计算机科学这个专业。

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Being a Mechanical Engineering major, what is your favorite machinery?

作为一个学机械工程的人，你最喜欢的机械是什么？

学习机械工程 - SpeakingMax英语口语达人

I figured Chemical Engineering would be the best way to get into it because it's a really broad major.

我发现化学工程应该是接触新能源的最好方式，因为这个专业覆盖面也很广。

学习化学专业的原因 - SpeakingMax英语口语达人

Could you tell us about your major, Mechanical Engineering?

你能跟我们谈谈你的专业，机械工程吗？

学习机械工程 - SpeakingMax英语口语达人

Why did you choose Chemical Engineering as your major?

你为什么选择化学工程这个专业呢？

学习化学专业的原因 - SpeakingMax英语口语达人