| 1. | Sink below the horizon .
沉落到地平面以下。 |
| 2. | The working projection plane is taken at the equatorial plane corresponding to the ground surface .
工作投影面为赤道平面相当于地平面。 |
| 3. | The word horizontal is applied only to the plane which is tangent to the ground-level equipotential surface .
地平面这个词则只表示与地面水准等位面相切的平面。 |
| 4. | On a cloudless night, frost may form on horizontal surfaces even when the temperature of the air is above freezing .
在晴朗的夜晚，即使空气的温度在冰点以上，地平面上也能结霜。 |
| 5. | As the pulsar rotates, this beam sweeps the sky in the same way that a lighthouse beam sweeps around the horizon .
当脉冲量旋转时，辐射束扫过天空，就像灯塔的光束绕地平面扫视那样。 |
| 6. | As the pulsar rotates, this beam sweeps the sky in the same way that a light house beam sweeps around the horizon .
当脉冲星旋转时，辐射来扫过天空，就像灯塔的光束绕地平面扫视那样。 |
| 7. | Ls that a cessna on the horizon ? - where
-地平面上不是有个降落信号灯吗？ -哪儿？ |
| 8. | A rise or an elevation in the level of the ground
上升在地平面上的上升或升高 |
| 9. | - ls that a cessna on the horizon ? - where
-地平面上不是有个降落信号灯吗？ -哪儿？ |
| 10. | Artillery growled and belched on the horizon
大炮轰鸣在地平面上猛烈地爆炸。 |
