三言两语:in one or two words
三三两两:by ones and twos
百里挑一:one in a thousand
三心二意:in two minds
三五成群:in threes and fours
十之八九:ten to one
乱七八糟:at sixs and sevens
相差悬殊:six to one
喋喋不休:talk nineteen to the dozen
半斤八两:the six of one and half a dozen of the other
一刻千金:every minute is precious
一举两得:kin two birds with one stone
一马当先:take the lead