Mannich reaction
[化] 曼尼希反应; 曼尼希缩合反应
🧩 词语组成解析
🗣️ 情景例句
All right. That's it for today.
行了。今天就做这些。
No practice, no gain in one's wit.
吃一堑，长一智。
What's that, Jim? Is it a picture?
吉姆，那是什么？一张照片？