Ethoxal
乙(酯)草酸
🗣️ 情景例句
Retired and moved to New York
我退休了， 搬到纽约
I am not through with school yet.
我还没有毕业。
What will be the population of these countries by the end of the twentieth century?
到20世界末较发达国家的人口将是多少？