| 1. | The line of sight must be approximately perpendicular to the horizontal axis .
视线必须近似地垂直于水平轴。 |
| 2. | Motion across the line of sight can be followed by direct observation .
与视线垂直的运动可以通过直接观测得到。 |
| 3. | Motion of a star across the line of sight causes no change in its spectrum .
恒星横越视线方向的运动，在它的光谱中不会引起什么变化。 |
| 4. | Tango 4 ! enemy in the line of sight ! get ready to attack
敌人出现在视野之内！准备好攻击！ |
| 5. | The brightness of the sky depends on the amount of molecules along the line of sight
天空的光亮程度视乎阳光照射时遇上的分子数量。 |
| 6. | The brightness of the sky depends on the amount of molecules along the line of sight
天空的光亮程度视乎阳光照射时遇上的分子数量。 |
| 7. | A doppler radar only measures the component of the velocity in the line of sight , the so - called radial velocity
因为多普勒雷达探测到的仅仅是风矢量在径向上的分量。 |
| 8. | The brightness of the sky depends on the amount of air molecules along the line of sight . more molecules mean a brighter sky
天空的光亮度取决于视线中空气分子的数量，分子愈多，天空就愈光亮。 |
| 9. | The brightness of the sky depends on the amount of air molecules along the line of sight . more molecules mean a brighter sky
天空的光亮度取决于视线中空气分子的数量，分子愈多，天空就愈光亮。 |
| 10. | Last september they put their plan into action when jupiter passed close to the line of sight between earth and a quasar
去年9月，当木星接近一条从某个类星体射向地球的光线路径时，他们便开始将计画付诸行动。 |
