Epidemiological
a. 流行病学
✅ 同义词
🗣️ 情景例句
I hope so.
希望如此。
I can't say…
有口难言。
When Christ was born nearly two thousand years ago, many people, rich and poor, gave him presents.
大约2000年前基督出生时，许多人，不论穷富，都给他礼物。