rational是什么意思？

The author thinks her friend made a rational decision in choosing a more hospitable place over an apparently elegant assisted living home.

Based on what is emerging from some of this research, that might have been as rational a way as any to reach a decision.

In contrast," the researchers continue, "many regulations that don't assume people make rational choices have been successfully applied to control alcohol, a substance — like food — of which immoderate consumption leads to serious health problems.

They help people make rational choices

Guiding people to make rational choices about food.

We need to think about the rational use of health care.

They are always polite and rational people.

And if we're not going to make rational decisions about the future, others may have to help us to do so.

This mission depends on traditions of rational discourse and vigorous defense of the scientific method.

Perhaps, if we continue to improve information-processing machines, we'll soon have helpful rational assistants.