know a trick or two

大纪元 - 英文谚语（十三） ... ─ know a trick or two 形容某人有点小聪明，相当有办法 ─ trick flying (飞机) 花样飞行 ...

英语新词汇与常用... ... know a thing or two 明白事理 know a trick or two 机灵 know a trick worth two of that 有更好的办法 ...

know-英汉词典... ... know a little of everything 什么都懂一点 know a trick or two {v.}机灵,精明 know beans [俚]精明,内行 ...