She is good at geography.

她擅长于地理

You need manual dexterity to be good at video games.

玩好电子游戏手要灵巧。

Viruses tend to be good at surviving when a computer system crashes.

病毒往往在电脑系统瘫痪时仍然存在。

Learn to be good at thinking.

学会善于思考。

We must be good at learning.

我们必须善于学习。

I used to be good at many things.

过去我擅长很多事。