environmental externalities

Introduced project appraisal method which allows incorporation of environmental externalities when comparing development alternatives;

引进了项目评估法，在对不同开发方案进行比较时，将环境因素纳入其中。

Here's a radical idea: What if China were to take a firm stance to incorporate the costs of environmental externalities on their exports.

现在有一个全新的看法：如果中国态度非常坚决地在出口成本中把环境外部性这个成本也加上会带来什么样的结果。

Many products are made in China and shipped overseas (environmental externalities of shipping…) then rot in warehouses and never put to use.

很多产品都是在中国制造，运往海外（运输的环境外部经济效果…），然后在仓库内腐烂，从未被使用过。