在黑暗中生活的动物可能会在进化过程中失去视力,甚至可能一点东西都看不见。
Creatures that live in the dark may lose their sight over evolutionary time. They may even lose their eyes entirely.
许多处于危险中的动物生活在那里,如金丝猴、云豹和亚洲黑熊。
Many animals in danger live there, such as the golden monkey, the clouded leopard and the Asian black bear.
海参是生活在海底的奇怪动物。
Sea cucumbers are strange animals living at the bottom of the sea.
He's sort of an innocent primitive, he appears unclothed he lives a free, peaceful life in harmony with the animals, with nature and the beasts, he races across the steppes with the gazelles.
他是一个未开化的野人,出现时身无寸缕,生活随性,和动物与自然和平相处,有时候甚至和羚羊赛跑,穿过草原。
And we could not preserve the quality of human life
如果不使用动物做实验,我们就难以保持人类的生活质量,
Mechanisms like habituation, classical conditioning and operant conditioning are real; they can be scientifically studied; and they play an important role in the lives of animals and probably an important role in human lives as well.
诸如习惯化,经典条件作用,操作性条件作用之类的机制,都是真实存在的;,这些机制都能得到科学的研究;,它们在动物的生活里起到了重要的作用,或许在我们人类的生活中,也同样起到了重要的作用。
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