Epidemiological
a. 流行病學(xué)
? 同義詞
??? 情景例句
Art is for enjoying, it shouldn't be wasted.
藝術(shù)是用業(yè)觀賞的，不能糟踢它。
Bare words,no bargain.
空言不能成交易。
Not to grasp firmly is not to grasp at all.
抓而不緊等于不抓。