a pig in a poke
掩人耳目的買賣或交易,即對(duì)商品的真實(shí)情況毫無了解
口語·書面語·警告未檢查就購買
英文釋義
buying something without inspecting it first
例句
Buying a used car without a test drive is like buying a pig in a poke.
典故來源
源自中世紀(jì)市場(chǎng)騙局:賣家將貓冒充豬放入袋子出售,買家未檢查就購買,結(jié)果上當(dāng)。