Premonochromator
前单色仪; 前置单色器
🗣️ 情景例句
It's bright and clear today.
今天天气晴空万里。
The truth hurts.
现实总是残酷的。
Not very good at the moment, I'm afraid. It's quite windy, and there's a lot of snow.
恐怕这阵子不很好。风很大，而且老下雪。