GbEng
我们来抛硬币决定谁先走吧,你是要正面还是要反面? Let's flip a coin to decide who should go first - do you want heads or tails?
反面反面,如硬币的反面 The reverse side, as of a coin.
向后转转向反面,如在政策上;大转变 A reversal, as in policy; an about-face.
这对於设计新市中心是个最佳的反面教材。 It is a classic example of how not to design a new city centre.