Cellase
[机] 纤维二醣
🗣️ 情景例句
What happened?
怎么啦？
There's no such thing as a free lunch.
天下没有白吃的午餐。
Both the police and the workmen were grateful to the student for this piece of advance information.
警察与工人都对那个学生事先通报情况表示感谢。