The higher animals have feelings.
高等动物是有感情的。
Higher animals are evolved from lower animals.
动物是由低等动物进化而来的。
I believe in the theory that the higher animals developed from the lower ones.
我相信比较高级的动物是由比较低级的动物进化而来的这一学说。
Luckily for the circus trainer, decisions about social rank among higher animals are not always based on brute force.
好在对马戏团的驯兽员来说，更高等动物之间的社会级别并不总是以兽性的强力决定。
Additional studies involving higher animals and clinical trials involving humans will be required before this synergistic activity is used clinically.
在这种协同作用在应用于临床之前，涉及高等动物的进一步研究和涉及人类的临床试验将是必要的。
Thus, from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows.
于是，从“自然”的战争，从饥荒和死亡，我们能够设想，直接的推论是：最崇高的目标，是生产高等动物。
The newly domesticated animals behaved better, were easier to control, and may have enjoyed a higher birth rate, which in turn yielded greater milk supplies.
新驯养的动物表现更好，它们更容易控制，出生率也更高，且反过来也会提供更多奶源。
Larger animals require more food than smaller animals, but smaller animals have a higher metabolic rate.
体型大的动物比体型小的需要更多食物，但体型小的动物有更高的代谢率。
The areas that are now desert were, like all arid regions, very susceptible to cycles of higher and lower levels of rainfall, resulting in major, sudden changes in distributions of plants and animals.
那片现在是沙漠的地区和所有干旱地区一样，对降雨量相对更大或更小的周期极为敏感，因此那里的动植物分布发生了巨大且迅速的变化。
Some other animals can count much higher than three.
其他一些动物能数到比3还多的数。
Although nutrients from animals may be of higher quality or more readily absorbed than vegetable sources, it is possible to have a healthy vegetarian diet.
尽管动物养分可能是高质量或比蔬菜来源的食物更加容易吸收，但拥有一个健康的素食膳食是可能的。
In addition to livestock, wild animals such as snakes and deer have been heading for higher ground-and they may not have suitable places to return to as floodwaters recede.
除了家畜，野生动物，像蛇和鹿也已经开始寻找更高的地带，而且，当洪水退去，他们可能也没有合适的栖身之所返回了。
They discovered that animals living in the enriched environment had higher levels of a protein called brain-derived neurotrophic factor (BDNF).
他们发现生活在复杂环境下的小白鼠有一种名叫脑源性神经营养因子（BDNF）的蛋白质水平较高。
Carbon dioxide at higher than normal concentration is one way of experimentally inducing panic in animals as well as in humans.
二氧化碳的浓度高于正常标准是一种实验方法包括对人和动物恐慌症的研究。
Prolactin levels are naturally higher during sleep, and animals injected with the chemical become tired immediately.
自然状态下，睡觉的时候泌乳刺激素水平更高，给动物注射这种化学物质它就会立马疲倦。
In addition, the higher temperatures may force the animals to spend more time lounging in the shade to avoid overheating.
另外，温度上升会迫使动物长时间躲在阴凉处，避免异常的高温。
Smaller, more numerous species like the jellyfish are flourishing and plugging the gap left by animals higher up the food chain.
水母之类体形更小品种更多的物种正在蓬勃发展，填补着食物链中更高层动物留下的空白。
Witnesses report wild animals such as elephants and monkeys moving towards higher ground as well as anxiety and distress in cattle, dogs and other domestic animals.
目击者报告诸如大象和猴子这类野生动物向高地迁移，同时牛，狗及其他家畜表现出焦虑和不安。
Animals who lived in stressful conditions such as crowded cages had weaker immune systems and a higher susceptibility to heart disease, and died at a younger age than those in less crowded conditions.
居住在拥挤牢笼中的动物，由于环境压力，自身的免疫系统更弱，而且很可能会发生心脏疾病，并且比那些居住在宽敞环境中的动物更容易早死。
The computer model finds that mid-frequency sonar is mostly filtered out for the whales, while the higher frequencies the animals use for hunting appear to be unimpeded by sonar.
电脑模型表明，突吻鲸能过滤掉声纳大部分的中频声波，而声纳也不会影响这些鲸鱼用来捕猎的高频声波。
Higher forms of animals, such as mammals and birds, can see, hear, smell, feel, and taste.
更高级形式的动物，比如哺乳动物和鸟类，能够看、听、嗅、触摸和品尝。
The European Commission has estimated that 9m animals may be used for such tests; some observers put the figure far higher.
据欧盟委员会估计，可能有900万动物用于此类实验，有些观察者认为这个数字远远低于实际。
Moreover, they found, animals whose muscles were full of the so-called IIX fibers were able to run farther and at higher work loads than normal mice could.
他们还发现动物的肌肉中如果富含叫做IIX纤维的物质时，它们可以跑得更远，并且比普通动物能承担更强的负荷。
Studies have found that laboratory animals with high concentrations of NNAL had higher rates of lung cancer, but its effect in humans has not been clear.
研究发现，高浓度NNAL的实验室动物有较高的肺癌发病率，但它对人类的影响尚不清楚。
Ichthyosaurs had a higher chance of being preserved than did terrestrial creatures because, as Marine animals, they tended to live in environments less subject to erosion.
鱼龙比起陆地的动物有更大的几率被保存下来，因为它们作为海洋动物常生活在腐蚀性较小的环境中。
Almost all of the animals and more than half of the higher plants are diploid.
几乎全部的动物和过半数的高等植物都是二倍体。
Almost all of the animals and more than half of the higher plants are diploid.
几乎全部的动物和过半数的高等植物都是二倍体。
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