Hemitrisulfide
三硫化二物
🗣️ 情景例句
After studying an hour, I finally got the hang of the lesson.
我学习了一个小时，终于理解了这一课的要点。
It's a shame I haven't seen more of you these recent years.
真遗憾，最近几年我未能见到你。
Yes, I have.I was there in April.
是的，我去过。4月份我在那儿。