Smith counters that if you factor in the hidden cost of government corn subsidies, environment degradation, and decreased human health and animal welfare, grass-fed is the more cost-effective model.
史密斯反驳说，如果你把政府谷物补贴的隐藏成本、环境恶化以及人类健康和动物保护的减少考虑在内，那么草饲模式更具成本效益。
Sown grass in plum orchard is an important organic cultivation model.
李园生草栽培是李树有机栽培的一种重要模式。
The model of grass and tree is described as a set of connected branch segments. Each segment is assumed that one side is fixed and another is free.
草木模型由互相连接的离散段组成，每个离散段一端固定，一端自由。
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