Epidemiologic
a. 流行病学
✅ 同义词
🗣️ 情景例句
His books exposed people to new ideas.
他的书使人们接触了新思潮。
How are you doing?
你过得好吗？
No, thanks. It's big, but it isn't heavy. It's light.
不用了，谢谢，是大盒子，但不重。很轻。