Diacetyldioxime
丁二酮肟
🗣️ 情景例句
So soon? Can't you stay a little longer?
就要走啊？你不能多呆一会儿吗？
The petroleum region is centered largely in the north.
那里的石油区大部分集中在北部。
So much is certain: that we would have doctors and preachers,
虽然我们还会有医生和牧师、