机警的用法和样例：
例句
-
有些人在其他方面很机警，但在股票市场上却容易上当受骗。
Some persons who are otherwise shrewd are mere babes in the woods where the stock market is concerned. -
我们的侦探都是非常机警的。
Our detectives were very much on the stick. -
有个机警的店员准确记得那个男子的穿著。
An observant shop assistant had remembered exactly what the man was wearing.
