Polyoxybutylene
[化] 聚氧化亚丁基
🗣️ 情景例句
It's complicated.
原因很复杂。
I didn't sleep well.
我没睡好。
The sandwiches are all ready, said her mother. I made some dumplings last night, too!
“三明治全都做好了，”她妈妈说，“昨晚我还做了一些饺子哩！”