darken

1. The sky darkened as the storm approached.
   风雨欲来，天色黑暗。
2. Go! And never darken my door again!
   走吧! 下次不要再到我家来了！
3. This terrible event will darken the rest of our lives.
   这件可怕的事将使我们的余生充满阴影。
4. We darkened the room to show the film.
   我们把房间弄暗以放影片。

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