a thing or two

• 值得知道的事情,教训

词汇搭配

• tell someone a thing or two 坦率地对某人讲讲,对...
• be up to a thing or two 很有经验, 明白事理...
• learn a thing or two 学会一些东西...
• know a thing or two 明白事理(很有经验...