Valerolactam
戊内酰胺
🗣️ 情景例句
When do we see the reviews?
什么时候我们可以看到评论
Adversity is a good discipline.
苦难是磨练人的好机会。
The rope had been cut, so it was obvious that the lamb had been stolen.
绳子被人割断，很明显小羔羊是被人偷走了。