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cost-effective adj.節省成本的。

cost-free

Poverty and hunger discusses a variety of cost-effective ways to increase food security in the short term . 《貧窮與饑餓》討論了在短期中提高糧食保障水平的各種各樣注意成本效益的方法。

Subsidies can also be cost-effective when they are concentrated on food that is eaten mainly by the poor . 如果把補貼集中于主要是窮人消費的糧食品種上,補貼的成本效益也是好的。

It is debatable whether it is cost-effective . 它的成本效益如何,尚無定論。