| 1. | The central heating is on a time-switch . 集中供热设备是定时开关的。 |
| 2. | They converged on the central open space . 他们在中央空地上集中起来。 |
| 3. | The central nervous system is congested . 中枢神经系统已经充血。 |
| 4. | Surrounding the central cylinder is the pericycle . 围绕中柱的是中柱鞘。 |
| 5. | We rarely addressed the central issue . 我们很少抓住问题的核心。 |
| 6. | The central section was severely shattered . 中间部分严重拉裂。 |
| 7. | Make sure the central heating is off . 集中供暖设备一定要关掉。 |
| 8. | What is the central thought of this article ? 这篇文章的中心思想是什么? |
| 9. | The central unit is a rotary drum . 核心设备是一个旋转的滚筒。 |
| 10. | Above them was a central bureau of cooperatives . 它们的上面则是合作社总局。 |