We will also tell about a study of one of the world's most unusual-looking animals.

VOA: special.2009.07.07

The beauty of the world, the paragon of animals and yet, to me, what is this quintessence of dust?

宇宙之华，万物之灵,但对于我，这尘土的精华又算得了什么？

耶鲁公开课 - 公正课程节选

But in the real world when dealing with humans, but even when dealing with animals, we don't actually always use primary reinforcers or negative reinforcers.

但当我们在现实中训练人类，甚至是训练动物时，我们实际上并不总是用到初级强化物,或是负强化物。

耶鲁公开课 - 心理学导论课程节选

Many of these animals are found nowhere else in the world.

VOA: special.2009.12.16

In nearly all the major relationship livestock-producing countries in the world, farmers add small amounts of antibiotics to the animals' feed.

VOA: standard.2010.07.21

Vandeberg also defends his research facility, saying that the animals in his primate research center receive better care than most people in the world.

VOA: standard.2010.02.16