我思疑他没能有用地控制时间。

I suspect that he did not control his time effectively.

youdao

若何才能经济有用地应对这种负外部性呢？

What is the economically efficient way of dealing with those negative externalities?

youdao

若何才能经济有用地应对这种负外部性呢？

What is the economically efficient way of dealing with those negative externalities?

youdao