life cycle

noun

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. （生物的）生活史，生活周期
The life cycle of an animal or plant is the series of changes and developments that it passes through from the beginning of its life until its death.

e.g. The dormant period is another stage in the life cycle of the plant.
休眠期是这种植物生活史中的另一个阶段。

2. （想法、产品、组织等的）存在周期
The life cycle of something such as an idea, product, or organization is the series of developments that take place in it from its beginning until the end of its usefulness.

e.g. ...the stages of the familial and economic life cycle...
家庭及经济生活周期的各个阶段
e.g. Each new product would have a relatively long life cycle.
每种新产品都将会有相对较长的生命周期。

1. 寿命周期：铝制罐已支配世界罐头市场长达35 年以上的时间,目前从商品货架寿命周期(Life Cycle)来看它已经有进入市场衰退期的迹象. 以前,大部分积累了许多开发经验和研究经费的企业大多数投入了DWI 饮料罐的生产. 但是,

2. 生活周期：植物的生活史与世代交替植物从生长发育的某一阶段开始,经一系列生长发育生殖过程,产生下一代后又重现了该阶段的现象称为生活周期( life cycle)或生活史( life history).

3. life cycle

3. 生活史：在有阳光的条件下,一些含色素:叶绿素(chlorophyll)、叶黄素(xanthophyll)等的原生动物可利用二氧化碳和水进行光合作用合成碳水化合物,如植物性鞭毛虫,但种类和数量都很少;四、原生动物的生殖(reproduction)和生活史(life cycle).