It is also a way for put-upon greens to harden their convictions , among their own kind , before heading back out to that unfriendly and ungreen world outside .

对于受愚弄的绿色主义者而言，它也是一个强化他们信念的途径，在退回到不友善及非绿色的外部世界之前，他们得以身处自己的同类之中。

More important , ungreen business practices-including profiting from an unpriced externality , such as carbon dioxide emissions-could represent a serious investment risk .

更重要的是，非环保的经营行为包括不计外部环境成本（如二氧化碳排放）而获利的行为意味着严重的投资风险。