Children should receive the MMR (----3----) series of 2 shots with 1 given between 12 and 15 months, and 1 between 4 and 6 years.是什么意思_Children should receive the MMR (----3----) series of 2 shots with 1 given between 12 and 15 months, and 1 between 4 and 6 years.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句