Allylic
烯丙基的
🗣️ 情景例句
What pretty flowers! Thank you.
好漂亮的花!谢谢你。
Britain is behind Japan in developing modern technology.
在发展现代技术方面，英国落后于日本。
He's only forty-one years old, and he has already been to nearly every country in the world.
他只有41岁，但他却过世界上几乎每一个国家。