Epsa
[醫][=embryo placental specific antigen]胚胎胎盤特異性抗原
??? 情景例句
There's your sleeping bag.
這是你們的睡袋。
I don't know how to do that.
我不知道該怎么打。
No, that would be fine. I'll tell you how to get here.
不晚，就這么定了。我告訴你到這兒來怎么走。