| 1. | A condensation to quinoid systems occurs . 发生了醌型体系的缩合反应。 |
| 2. | It was an intricate and ingenious system . 这是一个复杂而精致的体系。 |
| 3. | Electricity completely changed communications . 电彻底改变了通讯体系。 |
| 4. | The roman plan and series were the same . 罗马人的方案和体系与此相同。 |
| 5. | The system undergoes no acceleration . 该体系不承受加速度作用。 |
| 6. | The polygene is one member of a system . 多基因是一个遗传体系的成员之一。 |
| 7. | He has poisoned people according to a system . 他根据一种体系来毒害人们。 |
| 8. | We can't ape the japanese system . 我们不能完全仿效日本的体系。 |
| 9. | The unsaturated link occurs in a cyclic system . 在环体系中存在不饱和键。 |
| 10. | The gas escapes from the sphere of the reaction . 气体产物从反应体系中逸出。 |