一个人基因传播的成功不仅仅受到他/她个人繁殖成功的影响。
An individual's success in propagating his or her genes can be affected by more than just his or her own personal reproductive success.
显然,仅依靠种子生存或传播的植物物种更容易受到植物繁殖力下降的影响。
Plant species dependent solely on seeds for survival or dispersal are obviously more vulnerable to any decrease in plant fecundity that occurs.
为了繁殖,植物必须将种子传播到其他地区。
In order for plants to reproduce, they have to spread their seeds to other areas.
They take it, the vaccine itself, the virus, reproduces in their gut and they can actually spread it to other children in the same way that they spread the disease where you've got children that are maybe at school or at childcare.
他们服用了疫苗,则疫苗菌本体,病毒本体便在他们的体内进行繁殖,实际它们以同样方法传播到其他孩子体内,当你去学校或者幼儿园,接你的孩子的时候,这些病毒正在传播
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