Epsa
[医][=embryo placental specific antigen]胚胎胎盘特异性抗原
🗣️ 情景例句
I think it's too easy.
我觉得它太简单了。
Why don't we go to the office now?
为何我们现在不去办公室呢？
After a great many loud explosions, the race began.
在好一阵喧闹的爆炸声之后，比赛开始了。