When you write, you light a bonfire in the spirit world. It is dark there.

当你写作时，你点燃了一簇精神世界的篝火。那里很黑。

youdao

Then on Saturday afternoon he goes down to the river and fishes until it is dark.

然后，星期六的下午，他就去河边钓鱼，一直钓到天黑。

youdao

By nine it is dark and, as there is no electric lighting, there is little to do but sleep.

到了九点天已经黑了，由于没有电灯，除了睡觉没有别的事情可做。

youdao

But before it is dark, you see a large movement of gray bodies.

VOA: special.2009.08.19

The Evening Star is the, roughly speaking, first heavenly body that's visible in the sky as it gets dark, at least at certain times of the year.

粗略说来,昏星就是,天黑时第一个能看见的天体,至少在一年的某个时间段是这样

耶鲁公开课 - 死亡课程节选

The Homestake Gold Mine was chosen to study dark matter because it is largely protected from the radiation that could interfere with the project.

VOA: special.2009.07.21

By the time he gets home, it is dark and his young children are in bed.

ECONOMIST: On the edge of town

The film doesn't romanticize the ordeal: It is dark, but with a healthy dose of the absurd.

NPR: Laura Linney Explores the Art, Artifice of Acting

The bins "talk" only during daylight hours to prevent people from getting a fright when it is dark.

CNN: Talking trash cans keep Berlin clean