Epidemiologic
a. 流行病学
✅ 同义词
🗣️ 情景例句
Do these match?
这些相互搭配吗？
The adventure had been planned for quite a while.
那项冒险曾经作了长期的周详计划。
There were books, clothing and photographs, together with letters which the seaman had once received from his wife.
其中有书箱、衣服、照片以及水手收到的妻子的来信。