expert at

基本解释

You may think you're a good lover, but God wants you to become a great lover, a skilled lover, a master lover.Yet, most people never learn how to love.You can become an expert at relationships.
你可能認爲自己是一個很好的情人，但上帝卻想讓你變成一個更偉大的情人，愛的能力，愛的主宰，大多數的人從來沒有學會去愛，然而你可以在這層關系裡成爲一個專家。
I am an expert at using your product and can write your user guide with my eyes closed.
我是使用貴公司産品方麪的專家，閉著眼睛我都能替你寫出用戶指南來
Second, sometimes they are expert at their craft but not expert at explaining how they do it.
第二，有時他們在自己的領域是專家，但在解釋他們是如何做到的方麪則很業餘。

Medal winner Esther Conwell is a chemistry and atomic physics expert at the University of Rochester in New York.
There are different activities you can do where if you're good enough at them, if you're expert enough at them, you don't know you're doing them.
有很多不同的事情,如果你很擅長這些活動，你對這些活動非常在行，那麽你是不會意識到你正在做這些事情的。
耶魯公開課 - 心理學導論課程節選
Poetry is not interested in expert debate at all, and it converts the big spectrum of possible degrees of accent into those two simple categories: stressed and unstressed syllables.
詩是從不在乎這樣專業的爭議的，它將涵蓋很多不同程度的重音的音譜,簡單分成兩種：,重音和非重音節。
耶魯公開課 - 現代詩歌課程節選

Pino Bethencourt is a professor and leadership expert at IE Business School, in Madrid.
FORBES: Magazine Article