Survival Ration should provide at least 2,100 Kcal (and 60 g of protein) per person per day.是什么意思_Survival Ration should provide at least 2,100 Kcal (and 60 g of protein) per person per day.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句