life cycle

名词 life cycle:

1. a series of stages through which an organism passes between recurrences of a primary stage
2. the course of developmental changes in an organism from fertilized zygote to maturity when another zygote can be produced

1. 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
2. Plankton that remains free-swimming through all stages of its life cycle.
   终生浮游生物一种在其生命的所有阶段可自由游动的浮游生物