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
How many people live in Turkey?
有多少人在土耳其生活？
A stumble may prevent a fall.
小惩大诫。
He felt free to talk about his failures or his difficulties.
他可以随便谈论自己的失败或困境。