Gattermann-koch reaction
[化] 加特曼-科赫反应(一种甲酰化法)
🧩 词语组成解析
n. 科赫（人名）
🗣️ 情景例句
Are you traveling alone or whth a friend?
你是一个人旅行还是结伴旅游？
He took a strong attitude towards her.
他对她采取强硬态度。
'Have you anything to declare?' he asked, looking me in the eye.
“您有什么需要申报的吗？”他直盯着我的眼睛问。