1. We are determined to set up a complete, rationally distributed scientific and technological research system. 我们一定要建成布局合理、相互配套的科研体系。
2. There is evidence that firms believe they are behaving rationally whenever they downsize; yet recent research has shown that the actual economic effects of downsizing are often negative for firms. 有证据表明，企业认为，无论何时裁员，他们的行为都是理性的；然而最近的研究表明，裁员对企业的实际经济影响往往是负面的。
3. She argued her case calmly and rationally. 她冷静而又理智地为她的情况辩解。
4. It can be very hard to think rationally when you're feeling so vulnerable and alone. 在你感到如此脆弱和孤单的时候很难理性地思考问题。
5. Property demand needs to be rationally guided. 合理引导住房需求。
