Phosphorogen
磷光激活剂; 磷光增强剂
🗣️ 情景例句
Are you in a fraternity?
你在兄弟会吗？
You can't have it both ways.
你不能兼而有之。
It is hard for us to realize nowadays how difficult it was for the pioneers.
我们今天很难想像昔日的登山先驱们是多么艰苦。