| 1. | A real or virtual photon may spontaneously annihilate .
一个实的或虚的光子可以自发地湮没。 |
| 2. | The spontaneous regression of established tumors is a rare .
长成的肿瘤自发地消退是罕见的。 |
| 3. | Heat never flows spontaneously from a cooler to a hotter body .
热决不会自发地从低温物体流向高温物体。 |
| 4. | Spontaneously they began to clap and presently the platform was loud with applause .
大伙儿自发地开始拍手叫好，一会儿平台上就响彻了掌声。 |
| 5. | The study of thermodynamics enables us to predict which processes or reactions might occur spontaneously .
热力学的研究使我们能够预示哪些过程或反应可以自发地进行。 |
| 6. | An atom on an excited upper level can execute a downward transition not just spontaneously but also when photons of the radiation field surrounding the atomic interact with it .
处在较高的激发态上的原子不只可以自发地而且可以在它与原子系统周围辐射场的光子相互作用时发生向下的跃迁。 |
| 7. | A crowd of people assembled spontaneously on the spot of the accident
一群人自发地聚集在事故现场。 |
| 8. | The two suddenly embraced in a spontaneous gesture of affection
两个人因爱而突然自发地拥抱在一起。 |
| 9. | Normally , i ' m spontaneous and quite likelyto organize searches
一般来说，我会自发地积极地组织搜索 |
| 10. | A group of people got together spontaneously at the scene of the accident
一群人自发地聚集在事故现场。 |
