Tom knows a thing or two about Japanese."a thing or two

谁知道knows a thing or two的意思?Tom knows a thing or two about japanes. Tom knows a thing or two about Japanese.a thing or two he knows a thing or two about English这句话的意思 to my joy the scientist knows a thing or two about the technique是什么意思 a thing or two man is a good thing or bad thing? He knows _____English______French.A.either,or B.neither,nor He knows better than _____(do) such a silly thing.说明一下为啥么. Is that a good thing or a bad thing?什么意思?该如何回答 求一篇口语作文,题目是Are nicknames a good thing or a bad thing? Whatever made you think____such a thing填动词（of or from or in or on) knows the every thing ...god bless .please! knows the every thing ...God bless .please! Tom is a boy____ten.But he knows a lot of things.填介词 sweetshops can learn a thing or two翻译成英语 to move past a thing or person 是什么单词 英语翻译Everyone knows that the Frenchmen are romantic,the Italians are fashionable and the Germans are serious.Are these just stereotypes or is there really such a thing as national character?And if there is,can it affect how a nation succeed or Tom likes reading Chinese books although he knows a little Chinese.（用but改为同义句