Dihydroxytropane
二羟基托烷
🗣️ 情景例句
Mr. Richard Stewart. Richard Stewart
先生。
I'm always confused with s and th.
我常把s和th搞混。
Could you tell me your secret for a long, happy life?
你能告诉我长时间地过着快乐的生活的秘诀吗？