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。
A Next-Generation Operator requires a highly scalable, cost-effective and common operations model that spans all deployment sites.
下一代运营商需要一个能涵盖所有的开展项目的有高度扩展性的，划算的和通用的运行模型。
The program's success has made it a model for other countries looking for cost-effective and relatively quickly implemented urban transit solutions.
对于寻找成本有效型且相对能快速实施的城市交通方案的其它国家而言，该规划的成功实施使得其成为这些国家的典范。
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