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。
It is not something that just anyone can be good at.
它不是任何人都可以胜任的。
Can Lily be good with her brother?
莉莉能和他弟弟相处好吗？
The manager was stunned, but then told the dog "the sign says you have to be good with a computer."
经理惊呆了，他有对狗说：“广告上还说你要精通电脑。”
I don't think I'll be any good with my sword.
以后，我再也不能用刀了。