| 1. | Knowledge originates in practice . 认识来源于实践。 |
| 2. | Knowledge stems from practice . 知识来源于实践。 |
| 3. | An external force is one whose source is outside the system . 外力是来源于系统之外的力。 |
| 4. | Ground waters originating in different beds commingle . 来源于不同层位的地下水相互混合。 |
| 5. | The only available hyperimmune serum was of equine origin . 唯一可得到的超免疫血清来源于马。 |
| 6. | It seems to be rooted in confidence rather than insecurity . 它来源于信心而不是出于不稳定感。 |
| 7. | The concept of due process is rooted in english common law . 正当程序概念来源于英国的普通法。 |
| 8. | The urban poor, too, came originally from dispossessed peasants . 城市贫民本来也是来源于破产的农民。 |
| 9. | Compounds derived from plants and animals became known as organic . 来源于动植物的化合物称为有机化合物。 |
| 10. | This problem is rooted in the philosophies of plato and aristotle . 这个问题来源于柏拉图和亚里士多德的哲学思想。 |