Proconvertin
(血清凝血酶原)转变加速因子前体
🗣️ 情景例句
I'm a foreign student, and I'd like to make some new friends.
我是个外国学生， 我想交几个新朋友。
They bray most that can do least.
说话最多的人，能做的事最少。
The largest was 713 pounds.
最重的一个达713磅，