Ethanediol
[化] 乙二醇
🗣️ 情景例句
I have to return this book to the library.
我得把书还回图书馆了。
I always used to leave for work at 8:30.
我过去总是在8:30离开去工作。
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。