Proaccelerin
[生化]促凝血球蛋白原
🗣️ 情景例句
I'm sure he misses Grandma on a day like this.
我想在这样的日子祖父一定会思念祖母。
Do one's level best.
尽力而为。
How long have you been at this school?
你到这学校有多么时间了？