| 1. | The process of diffusion would often be very slow, depending on climatal and geographical changes, on strange accidents .
分散的过程很缓慢，这取决于气候与地理的变迁，取决于意外的偶发事件。 |
| 2. | We should examine all possible contingencies
我们应该检查所有可能的偶发事件。 |
| 3. | It ' s impossible to legislate for every contingency
为每一偶发事件都立法是不可能的 |
| 4. | Remember almost nothing happens by accident
记住：几乎没有任何事是偶发的。 |
| 5. | This reduces the impact of the occasional failure
这样就能减少偶发的失利带来的冲击。 |
| 6. | Mortal man is not an evolutionary accident
人类的进化不是一个偶发事件。 |
| 7. | Sporadic outbreaks of violence in the crowd
人群中偶发的暴力行为。 |
| 8. | They had anticipated all contingencies
他们预料所有的偶发事件。 |
| 9. | Diagnosis and treatment of incidental cancer of bladder 25 cases reports
偶发性膀胱癌的诊断和治疗附25例报告 |
| 10. | It was quite an accident
这是一桩偶发的事件。 |
