| 21. | rational living |
| 合理的生活
|
| 22. | a rational interpretation of myths |
| 对神话所作的合乎情理的解释
|
| 23. | give rational guidance to young men as to sexual matters |
| 在性问题方面对青年人进行合理指导
|
| 24. | rational [irrational] numbers |
| （数）有理[无理]数
|
| 25. | logical [ rational ] knowledge |
| 理性认识
|
| 26. | the rational nature |
| 理性
|
| 27. | perceptual [ rational ] knowledge |
| 感性[理性]认识
|
| 28. | rational persuasion |
| 合乎情理的劝说
|
| 29. | classes set up on a rational plan |
| 编排合理的班级
|
| 30. | arrive at a rational conclusion |
| 得出合情合理的结论
|