Since the maximum gap between. [3 S# R0 P3 [5 j4 J8 v+ @
doses is three months, a rise in supply 3 @; G% e4 ~6 e Hwould have been required to keep first " i7 B5 J' z' Pdoses at the same pace in April. 1 E3 x( Q% g0 V* L& n C K q* g/ k% j. {
这句话是什么意思啊?