Epidemiological
a. 流行病学
✅ 同义词
🗣️ 情景例句
Can I have your attention, please?
请大家听我说。
I am Chen Jianguo. I am from Shanghai, China.
我叫陈建国，来自中国上海。
The man had connected the air-line to a supply line of oxygen, not compressed air.
这个工人把供气管接到了氧气供应管上，而不是接到压缩空气管上。