| 1. | At least one dress rehearsal should be performed in dark twilight .
至少应在晨昏时进行一项实际操作练习。 |
| 2. | Such measurements have been made in daytime, in twilight, and during the night .
这个测量在白天、晨昏和夜间进行。 |
| 3. | There is the time of the summer solstice an astronomical twilight lasting throughout the whole night .
夏至时天文晨昏蒙影持续整夜。 |
| 4. | The phenomenon of twilight is a consequence of the scattering of the light in the atmosphere .
晨昏蒙影现象是光在大气中散射的结果。 |
| 5. | If the sky is cloudy the duration of the real twilight is of course considerably shorter .
如果天空多云，那么实际的晨昏蒙影时间是相当短的了。 |
| 6. | Because the sun rises and sets gradually, i used gradually changing light during twilight .
因为太阳是逐渐升起和没落的，于是在晨昏时分我使用了逐渐变化的光线。 |
| 7. | Miss you , in mornings , in nights , as naturally as birds sing
念你不分晨昏，犹如鸟儿鸣唱。 |
| 8. | Research on the dark and dawn controller in practical training
晨昏控制器在实训应用中的研究 |
| 9. | The first - rate children show filial piety and address their parents morning and evening . the second - rate children work hard to fulfill their parents ' needs
一等儿女：孝悌恭敬，晨昏定省；二等儿女：供亲所需，敬业乐业。 |
| 10. | This is one of a series of images designed to look for landforms near europa ' s terminator - the line dividing day and night - where low sun angles highlight subtle topographic features
这是一系列被设计用来观察木卫二晨昏线附近地貌的图片中的一幅，晨昏线是分隔白天和夜晚的界限，那里阳光以低角度突出了精细的地貌。 |
