Bos frontalis is a very rare, semi - wild and semi - domestic bovine species.
大额牛是一种半野生半家养的珍稀牛种,有关其起源和系统地位一直存在争议.
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Traditional management of Carya cathayensis is semi - wild extensive management , one tending only in on - year before seeding.
传统山核桃林分为半野生状态的粗放经营, 仅在结实大年采果前林地劈山抚育1次.
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