Perkov reaction
[化] 佩尔科夫反应
🧩 词语组成解析
🗣️ 情景例句
but it is.
但实际上很要紧。
The best horse needs breeding, and the aptest child needs teaching.
最好的马要驯，最伶俐的孩子要教。
The wooducutter was standing next to a fallen tree, with lots of small pieces of wood in front of him.
伐木工人正站在一棵倒下的树旁，他的前面有很多小片的木头。