We had got only halfway when it began to get dark.
走到半路，天就黑了。
It had begun to get dark, and Peter knew that it was time to go.
天开始黑了，彼得知道他该走了。
What time does it get dark in summer?
夏天什么时候天黑？
Usually, you must sleep for at least seven to eight hours every day, or you will get dark circles under the eyes.
通常，你必须每天至少睡7-8小时，否则你会有黑眼圈。
Well they talked me into it and we were just waiting for it to get dark out to set the mood for the whole adventure.
在她们的一再劝说下我答应了，现在我们只要等到天黑，营造好气氛，就可以开始这次探险了。
这时天色开始暗下来。
Does the sun ever get dark during the day?
太阳白天也会变黑吗？
The three of them walked on until it started to get dark.
三人于是同行直到天色开始变暗。
In summer it doesn't get dark until after eight o 'clock.
夏天，直到八点过后，天色才暗下来。
Once I walked through the woods when it began to get dark.
有一次我在天将暗时，独自穿越树林。
The human body is naturally accustomed to feel drowsy when the sun goes down and when it starts to get dark.
当太阳落下，天色开始变暗，人体自然而然会昏昏欲睡。
It was starting to get dark and Bobby reluctantly turned to walk home when suddenly his eyes caught the glimmer of the setting sun's rays reflecting off of something along the curb.
天开始暗了，就在博比不情愿地转身往家走的时候，突然，他看到在落日光线的反射下，路边有个东西发出了闪烁的微光。
It was starting to get dark and Bobby reluctantly turned to walk home when suddenly his eyes caught the glimmer of the setting sun's rays reflecting off of something along the curb.
天开始暗了，就在博比不情愿地转身往家走的时候，突然，他看到在落日光线的反射下，路边有个东西发出了闪烁的微光。
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