Proconvertin
(血清凝血酶原)转变加速因子前体
🗣️ 情景例句
Are you married or single?
你结婚了还是单身？
A horse stumbles that has four legs.
人有失手日，马有失蹄时。
He says the Chinese people are very friendly.
他说中国人都很热情。