Procomplementary factors
[医] 前补体因子
🧩 词语组成解析
n. 因素（factor的复数）
🗣️ 情景例句
The whole family decided to spend their holiday in Hawaii.
全家决定到夏威夷度假。
I'm working on it.
我正在努力。
I'm afraid he's out. He won't be back until tomorrow.
对不起，他外出去了，明天才回来。