来自 red,红色的，-en,使。

1. Humans redden when they are angry.

“人类愤怒时会脸红. ”

2. I saw him redden with pleasure.

我看到他高兴得脸都红了.

3. Han seemed to redden slightly, like the sun suddenly showing through on a cloudy day.

韩学愈似乎脸色微红, 像阴天忽透太阳.

4. The big spectacled Joy - Hulga would scowl and redden as if her privacy had been intruded upon.

戴眼镜的大个儿欢姐--赫尔格会气得横眉怒目,脸色涨红,好象人家触及了她的什么隐私.

5. Vast walls of dust hide and redden other hot young stars.

巨大的尘埃墙遮蔽了其他年轻的恒星,把它们“染”成红色.