Laevulic acid
[机] 乙酰丙酸, 左旋酸
🧩 词语组成解析
🗣️ 情景例句
What did I tell you?
我不是告诉过你吗？
Every one's faults are not written in their foreheads.
知人知面不知心。
One hour and seventeen minutes passed and we had not even covered half the distance.
1小时17分过去了，走了还不到一半路程。