Polyerg
[医] 多能血清(单种血清而作用于异种抗原)
🗣️ 情景例句
Still waters run deep.
冰冻三尺非一日之寒。
After my core courses are finished, I'll be doing independent study.
在完成基础课程之后，我将作独立的研究。
It took a very long time to carve a page for a book.
刻一页书要花费的时间太长。