雙語例句：
You have to be good at spotting trouble on the way and heading it off.
你必須善于發(fā)現潛在的麻煩并加以化解。
A teacher should be good at drawing inferences about other cases from one instance.
老師要善于舉一反三。
Viruses tend to be good at surviving when a computer system crashes.
計算機病毒在系統(tǒng)崩潰后往往依然存在。
John is good at swimming and basketball.
約翰擅長游泳和籃球。