Therefore, many different breeds were in use, and there was a need to pinpoint abilities and pass them on genetically.
而那些被应用于放牧的许多不同的品种，需要分化出有精确能力基因遗传稳定的品种。
Therefore, many different breeds were in use, and there was a need to pinpoint abilities and pass them on genetically.
而那些被应用于放牧的许多不同的品种，需要分化出有精确能力基因遗传稳定的品种。
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