There's a short story by the science fiction writer Orson Scott Card, where the basic point of the story is that of all the life forms in the universe, we, here on Earth, are the only ones that are mortal.

科幻作家Orson，Scott，Card写了一个短故事，该故事的主旨是,在宇宙的所有生命形式中，我们，在地球上是唯一终有一死的生命。

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If it's possible, use animals that don't feel pain, or use lower forms of life.

如果可以的话，请使用那些感觉不到疼痛的动物，或者用低级生物。

需要动物实验吗？ - SpeakingMax英语口语达人

There is no one-size-fits-all model of political life but good regimes may come in a variety of forms.

政治生活并没有大小通吃的模式,但好的政体,可能以各种形式存在。

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When Plato asked himself how could that be, the answer he gave is, well, it's got to be we were previous acquainted with the forms before our life in this world, and that shows that the soul must be something that existed prior to the creation of the body.

柏拉图问自己这究竟是怎么回事，他给出的答案是,我们有生命以前就,已经熟悉了这些形式，这就表明灵魂是在,身体存在之前就已经具有的了。

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that human life is in some ways essentially different than other forms of life.

那就是人的生命从许多方面来说和其他形式的生命有本质的不同。

需要动物实验吗？ - SpeakingMax英语口语达人

But it could be that we only grasp the forms in this life for the very first time.

但也可能是我们有生以来,第一次了解到形式。

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But you don't bump up against, you don't meet, you don't see or grasp or become directly acquainted with, the forms in this life.

但是,我们这辈子,没有直接碰到,见过,认知过,这些型相

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