双语例句：
You have to be good at spotting trouble on the way and heading it off.
你必须善于发现潜在的麻烦并加以化解。
A teacher should be good at drawing inferences about other cases from one instance.
老师要善于举一反三。
Viruses tend to be good at surviving when a computer system crashes.
计算机病毒在系统崩溃后往往依然存在。
John is good at swimming and basketball.
约翰擅长游泳和篮球。