一打，12個(gè)(set or group of twelve) [C]：sell eggs/eat cookies by the～論打賣(mài)雞蛋/吃餅干; sell/pack eggs in～s 按打賣(mài)/包裝雞蛋;Eggs are 60p a～. 雞蛋60便士一打。How many eggs are there in four～? 四打雞蛋有多少個(gè)? a～or so 一打左右;a～and a half (one and a half～) 一打半;half a～times/languages 六次/六種語(yǔ)言;half a～handkerchiefs/socks 半打手帕/襪子;a～people 12個(gè)人;a～roses/oranges 一打玫瑰花/橘子; two～copies 24份;several～sheets (of paper)幾十張(紙);I need two～more. 我還要兩打。a baker's～13個(gè);six of one and half a～of the other 半斤八兩(彼此彼此);
dozens of 許多(infml)：D～s of children/them were there. 許多孩子/他們中許多人在那里?！癏ave you got many records?”“ Yes. D～s.”“你有許多唱片嗎? ”“對(duì)，很多?！?/p>
talk/speak/chat，etc nineteen to the dozen 說(shuō)個(gè)不停(infml)：The people were talking nineteen to the～. 那些人在沒(méi)完沒(méi)了地高談闊論。
【慣用法】dozen用來(lái)計(jì)量買(mǎi)賣(mài)中不以重量計(jì)量的商品(如雞蛋、玫瑰花等)，如：two～eggs(兩打雞蛋)。注意，用于數(shù)詞后表示計(jì)量時(shí)，其復(fù)數(shù)形式與單數(shù)形式相同。a dozen of 僅用于特指某種東西(名詞前有指示代詞或物主代詞)時(shí)，如：a～of those red roses/your eggs(一打那種紅色的玫瑰花/你的雞蛋)，或其后為代詞時(shí)，如：a～of them(他們中的12人);一般不說(shuō) a～of roses，而說(shuō)a～roses。