Proaccelerin
[生化]促凝血球蛋白原
🗣️ 情景例句
I'm extremely sorry for the delay.
对此延误，我深感抱歉。
Let me introduce myself.
让我做个自我介绍吧。
has spent his lifetime studying active volcanoes and deep caves in all parts of the world.
花了毕生的精力来研究世界各地的活火山和探洞。