完全: complete; whole; perfect一回事: one and the same那完全是另一回事: that's quite another matter完全是另一回事: that's quite another pair of shoes一回事……另一回事: one thing…another另一回事: something else完全不同的另一回事: horse of another colour完全一回事: one and the same做是另一回事: scornful dogs will eat dirty puddings说是一回事做是另一回事: to say is one thing, to practise (is) another做又是另一回事: searching for a needle in a haystack一回事: 1.(同一件事) one and the same (thing) 咱俩说的是一回事。 we were talking about the same thing. 他不懂水和 h2o 分子式是一回事。 he didn't know that water and h2o are one.2.(一方面) one thing 说是一回事, 做又是一回事。 talking is one thing, doing is another那完全是另外一回事: that’s a horse of a different color不当一回事: as soon do…as look at另外一回事: another pair of shoes是同一回事: bureaudepartmentt说是一回事: saying and doing are two things; searching for a needle in a haystack同一回事: a horse of the same colour说是一回事做又是一回事: talking is one thing doing is another把这当一回事: take the matter seriously give爱是怎么一回事: sweety分子式是一回事: he didn't know that water and h2究竟是怎么一回事: what the heck is that就是这么一回事: that's all there's to it另外一回事,另当别论: another pair of shoes