Valangin's solution
[医] 瓦兰金氏溶液(亚砷酸溶液)
🧩 词语组成解析
🗣️ 情景例句
How come you speak such good English?
你为什么能说这么好的英语呢？
He was content that the thing had happened.
这事终于发生了，对此他是满意的。
Some of them are going to the park.
他们中有几个正走进公园。