1.
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。
2.
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。
3.
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。
4.
nautical twilight
航海晨昏蒙影时间(晨光从太阳中心在真地平下-12°到-6°
5.
The morning has its spectres as well as the evening.
早晨和黄昏一样，有它的各种幻影。
6.
Newton invented a paper lantern illuminated by a candle which he carried with him to light his way to school on dark winter morning.
译文：牛顿发明了一种点蜡烛的纸灯笼，在昏暗的冬天早晨上学时他就是打着这种灯照路。
7.
Fascinated sky enthusiasts in the Earth's northern hemisphere were treated to an instantly visible comet head and a faint elongated tail near sunrise and sunset.
北半球的众多天文迷在黄昏和清晨争睹这颗拥有肉眼可见的彗核以及细长的彗尾的彗星。
8.
He awoke next morning to a fine drizzle.
第二天早晨他醒来时天在下着蒙蒙细雨。
9.
We awoke next morning to a fine drizzle.
第二天早晨我们醒采时，天在下着蒙蒙细雨。
10.
Adults are active in daytime and copulation tookplace from evening to next early morning.
成虫白天活动,黄昏时交尾,羽化多集中于凌晨。
11.
Impact of Atmospheric Radiance on Efficient Imaging Signal-to-noise Ratio in Twilight Environment
晨昏时段大气辐射对成像有效信噪比的影响
12.
Yesterday morning we read the text.
昨天早晨我们读了课文。
13.
A rosy glow that suffuses snow-covered mountain peaks at dawn or dusk on a clear day.
高山辉晴天的清晨或黄昏在冰雪覆盖的山峰上充满的玫瑰色光辉
14.
I woke up with a very thick head this morning.
我早晨醒来觉得头昏昏沉沉的.
15.
He experienced different weather conditions - windy spring days, overcast winter days, and sunny summer mornings.
他体验了不同的天气状况-有风的春天、昏暗的冬天和阳光普照的夏日早晨。
16.
I check my in-tray every morning as a matter of course.
我照例每天早晨查看收文盘.
17.
Kevin wandered in to see me this morning.
克文今天早晨顺便来看我。
18.
Early this morning, Steven is stepping into the office.
这天早晨，史蒂文走进了办公室。）