Ethanedisulphonate
乙二磺酸盐
🗣️ 情景例句
Nice talking to both of you.
很高兴与两位交谈。
There was a big crowd and we had difficulty getting a taxi.
外面有一大群人并我们有很困难招一辆出租车。
What was the population of the more developed countries in 1950?
1950年较发达国家的人口是多少？