我精通一百种本领，而且还有一大口袋计谋。

I am master of a hundred arts, and have into the bargain a sackful of cunning.

youdao

我精通平面设计。

I'm learned in plane design.

youdao

我精通英语。

I know English well.

youdao

You'll remember that I mentioned several minutes ago that Milton appears -- literary historians, I think, have rightly seen the Milton who had written Lycidas as a different figure than the poet before having written Lycidas.

你们还记得我刚刚说过,精通文学的历史学家们，恰恰把写出了的弥尔顿,看作和之前的弥尔顿完全不同的一个人。

耶鲁公开课 - 弥尔顿课程节选

I usually ask for advice from a friend who knows those materials very well.

我都会向一个精通电子产品的朋友请教。

What kind of 课堂 - SpeakingMax英语口语达人