Epidemiologists
(epidemiologist 的复数) n. 流行病学家
🗣️ 情景例句
So just relax.
所以 ，放轻松点。
Who is the president of this republic?
谁是这共和国的总统？
In his youth, his father and grandfather often told him stories about their family history.
年轻时，他的父亲和祖父常常同他说起他们的家史。