N-UNCOUNT MMR is a vaccine that is given to young children to protect them against certain diseases. MMR is an abbreviation for "measles, mumps, and rubella." 麻腮风三联疫苗; measles, mumps and rubella的缩写 [oft N n]
...the MMR vaccine.
...麻腮风三联疫苗。
It means that the teams we are matching you against have average MMRs well under 1500.
它表示我们给你配的队伍有着平均低于1500的MMR。
MMRs varied significantly by district in Bangladesh, from 158 maternal deaths per 100 000 live births at Dhaka district to 782 in the northern coastal regions.
孟加拉国的产妇死亡率因地区的差异差别很大，从达卡地区每十万婴儿安全出生中的158例产妇死亡到北部沿海地区的782例。
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