每日一詞 403 undercover：秘密的，暗中進(jìn)行

今天我們要學(xué)的詞是undercover。 Undercover, 是指秘密的，暗中進(jìn)行的。"An undercover operation," 就是一次秘密行動(dòng)。最近，美國農(nóng)業(yè)部宣布回收1億4千3百萬磅牛肉。"An undercover video showed that cows too sick to stand were slaughtered for human consumption," 因?yàn)橐徊棵孛芘臄z的錄像顯示，加州一家屠宰廠非法宰殺了很多病得站不起來的牛，并將牛肉送入市場(chǎng)。"The undercover investigator refused to disclose his identity for fear of retaliation," 因?yàn)閾?dān)心報(bào)復(fù)，臥底拍攝錄像的調(diào)查人員不肯透露自己的身份。好的，今天我們學(xué)習(xí)的詞是undercover...