| 1. | An experimental solar lighting system in an above-ground cupola follows the sun with moving plastic mirrors . 在地面上一个钟形阁楼里的试验性太阳照明系统用移动的塑料镜跟踪太阳。 |
| 2. | They must be re - aimed often to follow the sun 必须不时的随着太阳的方向来调整。 |
| 3. | They must be re - aimed often to follow the sun 他们必须被反复瞄准经常跟随太阳。 |
| 4. | They must be re - aimed often to follow the sun 它们也需要常常根据太阳调整聚焦。 |
| 5. | They must be re - aimed often to follow the sun 它常常要随着太阳的变化而调整。 |
| 6. | They must be re - aimed often to follow the sun 他们会经常调整角度来正对太阳。 |
| 7. | They must be re - aimed often to follow the sun 他们必须要对太阳随时重新地位。 |
| 8. | They must be re - aimed often to follow the sun 他们必须经常调整以跟随太阳的角度。 |
| 9. | They must be re - aimed often to follow the sun 必须多次根据太阳照射角度重新对准。 |
| 10. | They must be re - aimed often to follow the sun 他们必须跟着太阳经常重新调整炉子。 |