Ethavas
乙基罂粟碱
🗣️ 情景例句
Typing is easy once you get the hang of it.
一旦你掌握诀窍，打字就很简单。
What is your hurry?
什么事让您这么着急呢？
Do you have anything like this in your stock?
你们库存中有象这样的东西吗？