I specialized in the restoration of old houses.

我擅长旧房的修复。

《柯林斯英汉双解大词典》

I specialized in physics.

我专攻物理。

youdao

In my last year, I specialized in military law.

最后一年，我专攻军事法。

youdao

Ok, so yeah, I first specialized in France in Aviation Engineering,

我先是在法国学的航空工程，

来美国的理由 - SpeakingMax英语口语达人

and I specialized mainly in control systems.

主修控制系统。

在学校的经验 - SpeakingMax英语口语达人

I mean, you are more specialized in whatever, you get your MBA or graduate work

我的意思是，你在某一方面学得越精，你MBA或者研究生工作越好，

MBA 的优点 - SpeakingMax英语口语达人

This was something that nobody in the League of Legends world specialized in and I catered to that niche.

FORBES: Move up http://i.forbesimg.com t Move down

And I've talked to a lawyer who specialized in this just a moment ago and he said, rest assured, there will be challenges.

NPR: With Interrogation Rules Set, U.S. Moves Ahead

Moreover, I would not rule out actively managed ETFs for investors where they provide access to some specialized expertise in a far flung corner of the market.

FORBES: Better Investment Results Often Come When You Don't Mess With What's Working