详细解释:生活周期
【计】 生存期
【医】 生活史, 生活环, 生活周期
英语解释：
名词 life cycle:
a series of stages through which an organism passes between recurrences of a primary stagethe course of developmental changes in an organism from fertilized zygote to maturity when another zygote can be produced例句：
A plant that completes its entire life cycle in a single growing season.一年生植物全部生命周期为一个生长季节的