Ceanothine
[化] 美洲茶碱
🗣️ 情景例句
My vacation was wonderful.
我的假期棒极了！
I have no leisure time to play golf.
我没空闲打高尔夫球。
You must keep it a secret. You mustn't tell anybody else.
你必须保密，谁都不能讲。