det (1)第二的(coming next after the first in order，time，grade，importance，etc;2rd)：the～row/floor/chapter/child 第二排/第二层/第二章/次子(女);the～day/week/month of the year 当时的第二天/第二周/第二个月;China's～biggest city中国的第二大城市;the～largest industrial power of the world 世界上第二工业大国;be～in (a) line/the exam/one's class 排队/考试/班内在第二名;finish the race in～place (be～in the race)比赛得第二名;be in the～year at university上大学二年级;take the～turning to the right第二个路口向右拐;

(2)另一(附加，额外)的(other or another after the first;additional)：a～time/chance/pair of boots 再一次/又一次机会/另一双靴子;a～person to ask it又一个问这问题的人;pass at one's～attempt二次再试时通过了;publish a～book出版另一本书;have a～house拥有另一所房子;take a～helping 再吃一份;We had peas and then a～vegetable.我们吃了豌豆，又吃了一份蔬菜。〖同〗another，additional;

(3)次等(要)的(less important，inferior)：a～prize/language二等奖/第二外语;use cloth/glass/ingredients of～quality 使用次等布料/二等玻璃/二等原料;the～eleven候补队;〖同〗inferior;

(4)类似的(being the same kind as another)：a～Shakespeare/Napoleon/Caesar莎士比亚第二/拿破仑第二/凯撒第二;He is not a very good pianist but his parents think he's a～Mozart.他并不是一位出色的钢琴演奏家，可他的父母却认为他是莫扎特第二。

every second …… 隔一(的)：come every～day/week/month 隔一天/隔一周/隔一月来一次;write on every～line隔一行写;

second only to仅次于：Iraq's oil reserves are～only to Saudi Arabia's.伊拉克的石油储备仅次于沙特阿拉伯。～in hardness only to the diamond在硬度上仅次于金刚石;

second to none 不次于任何人：Her work is～to none.她的工作是一流的。

→͵second-′best adj 仅次于最好的;͵second-′class adj 第二级(等)的;͵second-′degree adj 二度的;͵second-′guess v 事后评论(批评)，比某人猜得准;͵second-′hand adj & adv 二手(的);′second-lady n 第二夫人;͵second-′rate adj 第二流的;͵second-′string adj(指运动员)替补的;

adv(1)第二位(second in order，rank，or importance)：play/speak～第二个演出/第二个讲话;come/finish～in the race在赛跑中获第二名;“What class are you going?” “I go～.”“你乘几等仓?”“二等仓。”The teacher is batting～in today's line up.按今天的击球顺序，那位教师第二个击球。

→′secondly adv 第二，其次;

n(1)第二名(位)(person or thing that is next after the first in place，time，value，etc)[U，the～]：the～of June/the month 6月/本月2号;the～in line排在第二个;Henry/Alexander/George the～亨利二世/亚力山大二世/乔治二世;be the～to be chosen/arrive/ask for that是第二个被选中的人/到达的人/索要那东西的人;In business，money comes first and principles come a very poor～.在生意上，金钱第一，原则勉勉强强可算第二位。I was the first to apply for the job，and she was the～.我是申请该工作的第一人，她是第二个。

(2)另一个(人或事物)(another person or thing that is additional to the one stated)[U，a～]：a～chance又一次机会;a～pair of trousers又一条裤子;

(3)(大学中成绩)第二等;乙等(second-class university degree)[C][N (in)](BrE)：a～in English英语乙等成绩;get a lower/an upper～in biology 生物学考试获乙等二级/获乙等一级;leave university with～s 以各科乙等成绩大学毕业;

(4)二等品，二等货(article of goods that falls below the stand set for first quality)[C，通常pl]：get factory～s 买工厂的等外品;These books/glasses/stockings on sale are～s. 出售的这些书籍/眼镜/长筒袜是二级品。Of course，～s have some defects.次品当然有些瑕疵。

(5)二档(second forward gear on a car，bicycle，etc)[U]：be in～放在二档上;shift into～换上二档;change from～to third on the bend 在拐弯处从二档换到三档;

(6)添菜，第二份食物(additional helping of food)[pl]：call for～s又叫了一份菜;Is there any～s，Mam?妈，还要另添菜吗? Would anyone like～s of ice cream?还有人要加点冰激凌吗?

(7)(击剑、决斗或拳击中的)助(副)手(person who serves as a helper of a duelist or gives aids，advice to a boxer)[C]：S～away/out!副手退下!The～s were sent out of the ring. 副手被打发出拳击台。The～s will arrange the duel. 双方副手安排决斗。The prize winner has a～.获奖者有副手。〖同〗assistant