Marrubiin
夏至(草素)味苦透明的内酯C20H28O4
🔁 扩展释义
【化】 夏至草素(得自欧夏至草的双萜内酯)
🗣️ 情景例句
I don't know how to solve the problem. Will you help me out?
我不知道该怎么解决这个问题。你能帮我吗？
Please ask John to turn on the lights.
请要求约翰打开灯。
I didn't mean to offend you.
我不是故意冒犯你。