驴和鹅的变异性弱，驯鹿的耐热力小，普通骆驼的耐寒力也小，难道这会阻碍它们被家养吗？
Has the little variability of the ass and goose, or the small power of endurance of warmth by the reindeer, or of cold by the common camel, prevented their domestication?
驴和鹅的变异性弱，驯鹿的耐热力小，普通骆驼的耐寒力也小，难道这会阻碍它们被家养吗？
Has the little variability of the ass and goose, or the small power of endurance of warmth by the reindeer, or of cold by the common camel, prevented their domestication?
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