Dimethylxanthine
[医] 二甲黄嘌呤, 可可豆硷
🗣️ 情景例句
What's your title?
你的头衔是什么？
You'll solve the problem if you concentrate upon it.
如果全神贯注，你就会解决这个问题。
A few moments later
过了一会儿