Cannizarization
坎氏处理法(用醇溶钾碱处理醛类)
🗣️ 情景例句
which has been vacant for over a year now,
已空了一年多，
I often go to school in the morning.
我常常在早上去学校。
Hello. Can I speak to Zhou Lan, please?
喂！请问周兰在吗？