A fork of Rural Dictionary
所有生物都有必需的生命迹象，MRS GREN是七个生物必须运动的简称 分别是： M Movement All living things move,even plants. R Respiration. Getting energy from food. S Sensitivity. Detecting changes in the surroundings. G Growth. All living things grow. R Reproduction Making living things of the same type. E Excretion Getting rid of waste. N Nutrition. Taking in and use food.
原句解释：Living things have certain life processes in common, there are 7 things they need to do to count as being alive.MRS GREN is a funny way to remember them.