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动物种群 [dòng wù zhǒng qún]
[动] animal population
- 比如，他们需要解释动物种群为什么会受到降雨量变化的影响，以及可以采取何种预防措施。
They need, for example, to explain" why an animal population is affected by changes in rainfall, and what might be done to protect it. - 该地区的农民们注意到了沼泽地生产力的重大下降，以及随之而来的干旱使得大量动物种群迁出。
Farmers in the area have seen a significant decline in the marsh's productivity as successive droughts have driven away many animal populations. - 科学家最近才弄明白，衰老而产生的“性能力衰退”(生殖能力下降)在自然界动物种群中有着重大影响。
It is only recently that scientists have started to understand the significant role that age-related 'sexual decline' (reproductive senescence) plays in natural animal populations.
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