My grandmother is an expert at rummy.

我的奶奶是拉米纸牌游戏的专家。

She is a real expert at house decorations.

她在家居装饰方面是一个十足的专家。

He is an expert at medicine.

他是一个国际事务专家。

She is an expert at figure skating.

她是花样滑冰专家.

He is an expert at repairing computers.

他是修电脑专家.

I know you atr an expert at it.

我知道你是这方面的专家。

Francois is an expert at trancing animals.

法兰西斯是驯兽专家。

Moral: Become an expert at something!

寓意是：成为某个领域的专家！

Tom soon became an expert at translating.

汤姆不久便成了翻译专家了。

You can become an expert at personal persuasion.

你可以成为一名个人说服专家。