Epidemiogenesis
流行病发生
🗣️ 情景例句
I've been looking forward to meeting your husband, Mrs. Stewart.
我一直希望能见到 先生 Stewart太太。
So many countries, so many customs.
一个国家有一个国家的风俗。
Are you sure you can come by at nine?
你肯定你九点能来吗？