A 開(kāi)頭單詞
a senior pharmacist 一位資深藥師 高級(jí)藥劑師
a secret of success [農(nóng)業(yè)科學(xué)]一個(gè)成功的秘訣
a secret master plan 錦囊妙計(jì)
a second thought 進(jìn)一步考慮
a second child 二胎 第二個(gè)孩子
a second 一秒鐘
a sea of troubles 困難重重；無(wú)窮無(wú)盡的麻煩
a scratch of pen n. 簽名
a scrap of paper n. 碎紙片
a scientific breakthrough [新聞學(xué)與傳播學(xué)]科學(xué)突破
a scholar not bigoted 曠遠(yuǎn)之士
a scenically beautiful place 瑯?gòu)指５?/p>
a scene of devastation everywhere [語(yǔ)言學(xué)]瘡痍滿目
a scant supply of water [醫(yī)藥科學(xué)]供水不足