Well, for the past few centuries we have defined beauty not just as health and youth and symmetry that we're biologically programmed to admire, but also as tall, slender figures, and femininity and white skin.

在过去几个世纪里，美定义不仅仅只包括健康，身材匀称这些我们出于本能去赞美元素，还包括高挑，苗条体型， 富有女性气质，白色皮肤这些特征。

One such cause now seeks to end biomedical research because of the theory that animals have rights ruling out their use in research.

一个这样诱因是正在寻求终止医学研究，因为有这样一种理论说，动享有权利禁止它们被用于实验。

Perfect for the Werth Academy biology curriculum.

正好在沃思学院课上使用。

And actors are typically young and emotional creatures. - Yeah.

演员通常都是而情绪化。-是。

I am the nursery of the sea.

我是海洋栖息地。

Very shaken, the Care of Magical Creatures class followed at a walk.

保护神奇课学大为震惊，都跟在后面。

It's the annual event of coral spawning, when the colonies reproduced.

这是一一度珊瑚产卵时候，这时候寄在珊瑚里也开始繁殖。

Alternately some companies are now producing biodegradable teabags.

有一些公司制造可以降解茶包，可以用它们作为替代。

But then, according to researchers at University College London, human beings are naturally sanguine creatures.

伦敦大学研究表明，人类是天性乐观。

Creatures are scarce because few can eat conifer needles.

这里缺原因是很少有以针叶为食。

How we detect disease will change as tiny biosensors are developed to analyse tests in minutes rather than days.

由于开发出微小传感器能在几分钟而不是几天之内对测试进行分析，我们发现疾病方式也会发变化。

Their methods do not attempt to estimate the actual biomass (the amount of living biological matter) of fish species in particular parts of the ocean, but rather changes in that biomass over time.

他们方法不是为了试图估算特定区域海洋中实际动总数（活着总数），而是研究单位面积中海洋数量变化。

When the husky and lean mice shared microbes with each other, the bigger ones picked up some of the beneficial gut flora—and had improved metabolisms.

当胖瘦老鼠共享微, 大个会挑选一些有益肠道菌群、提高新陈代谢。

Yet, largely on the basis of named crop varieties that are no longer extant, the UN's Food and Agriculture Organisation estimates that 75% of crop biodiversity has been lost from the world's fields.

据联合国粮农组织估计，以有命名作品种为基础，75%作多样性已经 在田间消失了。

Investigative Committee Deputy chairman Alexander Fedorov says that U.S. biological infrastructure near Russia is undertaking " uncontrolled and unrestricted expansion."

调查委员会副主席亚历山大·费多罗夫表示，美国在俄罗斯附近基础设施正在“不受控制、不受限制地扩张”。

These critters play vital roles in our health.

而就是这些不起眼微对我们身体健康起到了至关重要作用。

As curious beings, it's hard to combat a person's urge of discovery.

人类这一好奇心极强，很难抑制探索欲望。

So we don't have anything that can entangle marine life.

我们没有任何能连累到海洋东西。

New shores were formed and totally different creatures would have washed up onto the shores.

新海岸形成了，完全不同被冲向了海岸。

But the competition of man against man is not the simple process envisioned in biology.

但是，人与人竞争并不像学中想像那样是一个简单过程。