自然气候的变化也已经在某些物种中间减轻了影响，但是在任何时刻我们都一直可以帮助它们渡过灾难。
Naturally climatic changes have also played their part in the reduction in some species, but at any time we have been able to help them overcome adversity.
麦克·金南博士说，在某些情况下，向一个国家引进外来物种的人的动机是好的，但导致了灾难性的后果。
Dr MacKinnon says in some cases, alien species have been introduced to a country by people with good motives in mind, but they lead to disastrous results.
于是有学者提出了这样一种令人惊讶的可能性，是不是所有恐龙的祖先都拥有细长的羽毛，只是某些物种在进化过程中渐渐失去了这些羽毛。
This raised the astonishing possibility that the ancestor of all dinosaurs had hairlike feathers and that some species lost them later in evolution.
我们并不只是在讨论某些物种。
但是，在某些时间或空间，一些物种会迅速生长到足以造成危害的数量，导致病虫害爆发，持续时间不定。
However, sporadically, in time or space, some species may grow rapidly to damaging numbers, developing outbreaks which may persist for a variable length of time before subsiding.
相比之下，犹如所料，入侵性较弱的外来物种的武器库至少在某些本土物种那里也存在。
The more benign aliens by contrast were predicted to have arsenals also found in at least some native species.
夏斯报告说，在石油污染严重的地区，某些物种已几乎完全灭绝。
Chasse reported that some species that lived in heavily oiled areas were almost completely wiped out.
目的获得足够量的分泌片(SC)及其相应的抗血清，用于研究sc的功能与SC在人和某些物种黏膜组织内的分布。
Objective to obtain purified human colostrum secretory component (SC) and rabbit anti SC sera, and to determine the distribution and function of SC in mucosal tissues of human and some species.
我相信所有的物种，在某些季节里都穿着有类似衬衣的东西。
I believe that all RACES at some seasons wear something equivalent to the shirt.
我相信所有的物种，在某些季节里都穿着有类似衬衣的东西。
I believe that all RACES at some seasons wear something equivalent to the shirt.
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