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In animal breeding, especially cattle - breeding, artificial insemination is now widely used.

在动物生育, 特别是牛的生育中, 人工授精已经广泛使用.

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It has usually occurred only in farming and cattle - breeding environments.

它通常只会在农场和畜牧环境下才会发生.

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Booming cattle breeding is a major cause of desertification in grassland.

发达的畜牧业是草原荒漠化的主要原因之一.

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These are source materials referring to cattle breeding.

这些就是有关家畜饲养的资料.

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To dairy cattle breeding industry, mainly pigs, and chickens, sheep, rabbits and so on.

养殖业以奶牛 、 猪为主, 兼养鸡 、 羊 、 兔等.

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That was no longer the case after the introduction of cattle - breeding, metalworking , weaving and, lastly, agriculture.

随着采用牲畜繁殖 ﹑ 金属加工 ﹑ 纺织以及最后田野耕作,情况就改变了.

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