黑
hēi
black; dark
In a story
因此，天一黑，就没有人敢走近那座庙。So once it got dark, nobody dared go near the temple.狐狸学字 · The Fox Who Learned to Read · HSK 5
就在这四十秒里，屏幕上的画面忽然黑了。In those forty seconds, the picture on the screen suddenly went black.末班地铁 · The Last Train · HSK 5
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