Valerolactone
戊内酯
🗣️ 情景例句
I'm very proud of you.
我为你感到非常骄傲。
Do you have a passport?
你有护照吗？
He had known that it was not safe to travel alone in the forest near the coast.
也听说过独自一人在海边的森林里走是不安全的。