被子植物雌、雄配子体的形成是世代交替的关键过程之一。
Angiosperm female and male gametophyte formation is the key to the process of generational one.
你见过有几个人能像邓这样，拥有法律赋予的绝对权力，而他的孩子却不能继承世代交替的控制权？
How many times have you seen anyone with such absolute power put into law that his children could not maintain a generational grip on power?
这两个纲的许多种类都有水母型和水螅型的世代交替。
The two key link in many types of jellyfish are generational-type and Hydra type.
他们集中在世代交替、自由职业者的崛起和技能差距等等。
They focus on the generational shift, the rise of freelancing, the skills gap and more.
以世代交替为特色的腔肠动物；通常群居的水螅阶段先于水母阶段；水螅和水母。
Coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes.
配子体植物中以世代交替为特征的产生配子产生的阶段…
The gamete - producing phase in a plant characterized by alternation of generations.
探讨了煤中黄铁矿的形态、世代交替、有机硫的结构及煤中硫的地质成因。
The shape of pyrite in coal, formation generations, the textures of organic sulfur, and the geological genesis of sulfur in coal have been probed into as well.
从1992年以来，我国的生育率低于实现人类世代交替所需的更替水平（平均每对夫妇生育2.1个孩子）已经长达17年。
Since 1992, China's birth rate has been lower than the rate at which each human generation needs to replace itself ( an average of 2.1 children per couple).
从1992年以来，我国的生育率低于实现人类世代交替所需的更替水平（平均每对夫妇生育2.1个孩子）已经长达17年。
Since 1992, China's birth rate has been lower than the rate at which each human generation needs to replace itself ( an average of 2.1 children per couple).
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