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n (1)(手，腳的)指甲;爪(hard thin covering on the upper surface of ends of the fingers or toes of men，monkeys，etc;claw of a bird or an animal) [C]： finger-/toe-～s 手指/腳趾甲;trim/dye/cut/bite/paint/break one's～s 修/染/剪/咬/涂/折斷指甲

(2)釘子(thin pointed piece of metal used to fasten pieces of wood，etc together)[C]：hit/drive in the～with a hammer 用榔頭釘釘子/把釘子釘進(jìn)去;Do you prefer using～s or screws when you make furniture? 你打家具時(shí)喜歡用釘子還是螺絲釘? He hammered a～into the wall and hung a picture on it. 他往墻上釘了顆釘子，在上面掛了一幅畫。

a nail in sb's/sth's coffin 促使某人(某事)提早完蛋的東西：Credit cards are the first～s in the coffin of traditional financial methods. 信用卡是最早促使傳統(tǒng)金融運(yùn)作方式完結(jié)的東西。

on the nail(infml) 立即(付款)：I prefer to pay cash on the～if I have money. 我要是有錢，愿意立即付款。

→′nail-brush n 指甲刷;′nail-file n 指甲銼;′nail-scissors n 指甲剪;′nail-varnish(AmE ′nail-polish) n 指甲油;

v (1) 釘住(牢) (fasten sth with nails)[T+n+prep(to/on)]：～a shelf to the wall/a sign to the post/a notice to the bulletin board 把架子釘在墻上/把招牌釘在柱子上/把通知釘在布告欄上;～ a lid on a box/a mirror on the wall 給箱子釘上蓋子/把鏡子釘在墻上;

(2)抓住，捕獲 (catch or seize(sb or sth)) [T+n](infml)：～a thief/an apple 抓住一個(gè)賊/一個(gè)蘋果;She had been avoiding me for weeks but I finally～ed her at her office. 她已經(jīng)躲了我好幾個(gè)星期，最后我在她的辦公室堵住了她。

(3)揭露(穿) (discover or expose)[T+n](infml)：～a lie/the truth/the myth 揭穿謊言/揭露真相/戳穿騙人的鬼話：They～ed the source of the story and finally forced a retraction. 他們揭露了謊言的根源，最后迫使其消聲匿跡。

nail down (v adv) 1)用釘釘住(vt)：The storekeeper～ed down the tea chest. 店主把茶葉箱釘上。2)明確規(guī)定：Signing the contract will～down our agreement. 合同一經(jīng)簽字，我們達(dá)成的協(xié)議就不可改變了。3)使說出明確的意圖或打算：She's finally agreed to do the job but I can't～her down to a date. 她最后同意做這個(gè)工作，但我未能使她明確地說出著手的日期。

nail on (v adv) nail sth on/onto/to sth(v prep) 用釘子把……釘在……上面(vt)：He～ed a rafter onto the beam. 他把一根椽子釘在房梁上。

nail up(v adv) 1)將……釘在墻上(或高處)(vt)：He～ed the picture up on the wall. 他把圖片釘在墻上。2)把(門、窗等)釘死(牢)(vt)：He tried to open the door but it was～ed up. 他企圖把門打開，但門已被釘死。