Salitannol
水杨酸单宁酸缩合产物
🗣️ 情景例句
We've known each other since we were children.
我们从小就认识。
This professor has put all of his students to sleep except two.
这位教授使得除了两人以外的所有学生都入睡了。
and that is one of the things the young are busily engaged in seeking.
这正是年轻人所热衷追求的。