乐乐跑一百米用了17.3秒，贝贝跑一百米用了16.9秒，他俩谁跑的快？快多少秒？0q-v5G6a+s+d7r;y.H/N-G3n3p(U4m6R,k2i4])Y5t8a
算式：提示3Z.P;H+z0?6Z8t1[0q-v5G6a+s+d7r;y.H/N-G3n3p(U4m6R,k2i4])Y5t8a
答：0t2E,_.o(`.S跑的快，快1r6S8J0Q*x秒。0q-v5G6a+s+d7r;y.H/N-G3n3p(U4m6R,k2i4])Y5t8a