他们的艺术成果被保存在野生动物、牛、山羊、人类以及日常生活场景的绘画中，这些场景可能可以追溯到公元前5000年。

Their artistic endeavors have been preserved in paintings of wild animals, cattle, goats, humans, and scenes of daily life that extend back perhaps to 5,000 B.C..

youdao

牛是有用的动物。

Cows are useful animals.

youdao

首先，所有的动物，如牛、猪和羊，总是排出石灰甲烷气体，这是继二氧化碳之后第二常见的温室气体。

For a start, all animals, such as cows, pigs and sheep, always gas limed methane, which is the second most common green house gas after carbon dioxide.

youdao

So it's true. Before, it was like a butcher place where they cut the cows and pigs and everything.

是这样的。以前它像个杀牛、猪等动物的屠宰场。

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