| 1. | The solid decomposed rapidly with blackening .
固体迅速分解并变暗。 |
| 2. | Why does starting a refrigerator motor cause the house lights to dim ?
为什么起动电冰箱的电动机时，会使室内的灯光变暗？ |
| 3. | Control light . adjust light levels up or down
操控光亮：使周围的亮度变亮或变暗。 |
| 4. | Andin the dark ofthe night , and it does get dark
在夜晚的黑暗中它的确变暗了 |
| 5. | Is the output voltage high or low in the dark
在光线变暗时，输入的电压是高还是低？ |
| 6. | Janet watched the rain clouds darken the sky
珍妮特看着乌云将天空变暗。 |
| 7. | Pulling down the window shades subdued the light in the room
拉下窗帘使房间的光线变暗了。 |
| 8. | Cabin light will be dim for takeoff
机舱灯将会因飞机起飞而变暗。 |
| 9. | He saw the monitor black out and then a few words faded in
他看见屏幕变暗，接着出现了几个字。 |
