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.
数字是惊人的:估计有3320 万人携带艾滋病病毒生存,仅2007 年新感染人数就达到250 万。
The numbers remain staggering: an estimated 33.2 million people living with HIV and 2.5 million newly infected in 2007 alone.
虽然这项工作非常关键,但它仅涵盖了整个门户生存期中所需的总体规划工作的一部分。
Although this work is critical, it covers only a portion of the total planning effort required over the lifetime of a portal.
If evolution wired us up simply to survive, then it's a puzzle why animals would relate positively to other animals.
如果进化仅让我们生存,那么这是个谜题,为什么动物之间确定有联系。
应用推荐