The country needs another burst of practical idealism.

这个国家需要重新燃起现实的理想主义。

youdao

That's practical idealism coupled together.

这是实际与理想主义相结合。

哈佛公开课 - 幸福课课程节选

Idealism,good intention,a lot of money wasn't practical.

理想主义，良好意愿，钱财，都是不切实际的。

哈佛公开课 - 幸福课课程节选

Other steps discussed at the conference range from the practical, such as replacing biomass fuels with kerosene or natural gas, to the idealism of cities developed so that no cars are needed, and thus no car-related pollution is generated.

CNN: Air pollution kills, but deaths can be prevented