They would be costly and the net benefits might well be negative.

他们会耗费成本，带来的净收益也可能是负面的。

youdao

Even a delay of a single year would reduce net benefits by 22.5 percent.

即使只延期一年，纯收益也将减少22.5%。

youdao

Even a delay of a single year would reduce net benefits by 22.5 percent.

即使只延期一年，纯收益也将减少22.5%。

youdao