Etofylline
[化] 乙羟茶碱
🗣️ 情景例句
I would like to make an appointment with...
我想和……约一下。
It's a pencil.
那是一枝铅笔。
Excuse me. Are the hourse-drawn streetcars free?
对不起，这些马车是免费乘坐的吗？