Proconvertin
(血清凝血酶原)转变加速因子前体
🗣️ 情景例句
The costs of college get higher every year.
学费逐年增加，越来越贵。
What's your favorite sport?
你最喜欢什么运动？
He had known that it was not safe to travel alone in the forest near the coast.
也听说过独自一人在海边的森林里走是不安全的。