Elbs reaction
[化] 埃尔布斯反应; 合成蒽
🧩 词语组成解析
🗣️ 情景例句
What are you going to do about your appointment
那怎么办
Which one is more clever?
哪一个是较聪明的？
Mum, this is my teacher, Miss Gao.
妈妈，这位是我的老师，高小姐。