Seroepidemiology
n. [医]血清流行病学
🗣️ 情景例句
And these coral earrings for my daughter are so pretty.
还有给我女儿的珊瑚耳环也非常漂亮。
How did he get away with cheating?
他是如何考试做弊而未被发现？
How do you know?
你怎么知道？