- constituting number two in a sequence; coming after the first in time or order; 2nd第二; 第二次：
he married for a second time
他结了第二次婚
Herbert was the second of their six children.
赫伯特是他们六个孩子中的第二个。
- secondly (used to introduce a second point or reason)第二, 其次（用来引出第二个要点或原因）：
second, they are lightly regulated; and third, they do business with non-resident clients.
第二, 他们没有受到严格监管; 第三, 他们和非居民客户做生意。
- Music an interval spanning two consecutive notes in a diatonic scale【乐】二度音程。
- the note which is higher by this interval than the tonic of a diatonic scale or root of a chord二度音。
- the second in a sequence of a vehicle's gears（机动车的）第二挡：
he took the corner in second.
他挂二挡转弯。
- Baseball second base【棒球】二垒。
- chiefly Brit. the second form of a school or college〈主英〉（学校或大学的）二年级。
seconds
informal a second course or second helping of food at a meal〈非正式〉第二道菜; 添菜。
- denoting someone or something regarded as comparable to or reminiscent of a better-known predecessor又一, 第二（表示可与原有事物相提并论的或使人想起它的人或事）：
a fear that the conflict would turn into a second Vietnam.
对冲突会演变成又一个越南的恐惧。
- subordinate or inferior in position, rank, or importance从属的; 次等的：
it was second only to Copenhagen among Baltic ports
在波罗的海的港口中它仅次于哥本哈根
he is a writer first and a scientist second.
他首先是作家, 其次是科学家。
- additional to that already existing, used, or possessed另外的; 另一的：
a second home
又一个家
French as a second language.
作为第二语言的法语。
- the second finisher or position in a race or competition（比赛或竞赛的）第二名; 第二位：
he finished second.
他获得了第二名。
- Brit. a place in the second grade in an examination, especially for a degree〈英〉（尤指学位考试的）第二等。
- Music performing a lower or subordinate of two or more parts for the same instrument or voice【乐】第二声部的：
the second violins.
第二声部小提琴。
seconds
goods of an inferior quality二等品; 次品。
the seconds
the reserve team of a sports club（体育俱乐部的）预备队。
- coarse flour, or bread made from it粗面粉; 粗粉面包。
- an assistant, in particular助手, 尤指：
- an attendant assisting a combatant in a duel or boxing match（决斗或拳击赛的）助手。
- a Cub or Brownie chosen by their pack to assist the Sixer and replace them when they are absent给六人小队队长当助手的幼年童子军。
- formally support or endorse (a nomination or resolution or its proposer) as a necessary preliminary to adoption or further discussion支持（提名、决议、倡议者）, 赞成：
Bridgeman seconded Maxwell's motion calling for the reform.
布里奇曼支持马克斯韦尔呼吁改革的动议。
- express agreement with附和; 赞同：
her view is seconded by most Indian leaders today.
她的观点得到现在大多数印度领导人的赞同。
- archaic support; back up〈古〉支持：
so well was he seconded by the multitude of labourers at his command.
他受到了他统率的广大劳动者高度的支持。
in the second place
- as a second consideration or point第二; 第二点。
second to none
- the best, worst, fastest, etc.首屈一指, 无与伦比。
seconder
noun- （缩略词：s）a sixtieth of a minute of time, which as the SI unit of time is defined in terms of the natural periodicity of the radiation of a caesium-133 atom. (Symbol: ")秒, 秒钟（符号："）。
- informal a very short time〈非正式〉片刻, 瞬间：
his eyes met Charlotte's for a second.
他和夏洛特对视了一下。
- （亦作arc second 或second of arc）a sixtieth of a minute of angular distance. (Symbol: ")（角度单位）秒（符号："）。
- Brit. transfer (a military officer or other official or worker) temporarily to other employment or another position〈英〉临时调派（军官、官员、工作人员）：
I was seconded to a public relations unit.
我被临时调到一个公关部门。