Treatment of severe PEM is divided into two phases, a 24- hour care unit (phase one) and a day-care unit (phase two).是什么意思_Treatment of severe PEM is divided into two phases, a 24- hour care unit (phase one) and a day-care unit (phase two).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句