1. 如果天空多云，那么实际的晨昏蒙影时间是相当短的了。
If the sky is cloudy the duration of the real twilight is of course considerably shorter.
2. 晨昏蒙影现象是光在大气中散射的结果。
The phenomenon of twilight is a consequence of the scattering of the light in the atmosphere.
3. 使用上边缘，计算晨昏蒙影时都以日心计算。
Times, and to zero when computing start/end of *//* twilight.
4. 理想地，望远镜将会在天文晨昏蒙影之前20分钟左右开始拍摄第一个区域的第一批图象。
Ideally, the telescope will begin acquiring the first pass of the first region around 20 minutes prior to astronomical twilight.
5. 你仍需抚摸那粒沙子，它对晨昏蒙影总是迷惑不解……我仍需给一些情人们加冕。因此，秋天，我请求你用自己的金黄使他们地久天长。
You still have to caress the sand who is so confused about the long shadow of the twilights...and I still have some loves to crown, therefore I ask you, Fall, seal them for eternity with your gold.
6. 微弱的光芒；晨昏蒙影，曙暮光
In the twilight of his life.
7. 观测者大概在民用晨昏蒙影时开始启动望远镜，然后将望远镜指向目标并调好焦距。
The observer begins the telescope startup process around nautical twilight, preparing the telescope then adjusting the pointing and focus.
8. 晨昏蒙影什么意思
8. 夏至时天文晨昏蒙影持续整夜。我在这夏至之夜到这里来便没错了。
There is the time of the summer solstice an astronomical twilight lasting throughout the whole night.