Lathosterol
7-烯胆(甾)烷醇
🗣️ 情景例句
Please give me a general view first, will you?
首先，请给我一个大概的介绍，行吗？
This man digs foundations for skyscrapers.
这个人在挖着高层大楼的地基。
It's Jim. He's in that tree. He can't get down. Can you help him?
是吉姆，他在树上，下不来了，你能帮他吗？