Naphthothiazines
三氮杂蒽
🗣️ 情景例句
and I'll think of a surprise.
我来想出一个惊喜。
A joke never gains an enemy but often loses a friend.
开玩笑总不能化敌为友，反而有时会失去朋友。
I'm afraid I can't remember.
恐怕我记不得了。