for + [数字] + seconds
表示持续时间时，second 用复数 seconds，前面接数量词，常与 for 连用。
She held her breath for thirty seconds.
她屏住呼吸三十秒。
秒
seconds — plural of second
片刻；一会儿；第二名；第二位；次等；第二次机会；角秒；（决斗等的）助手；支持者
A unit of time equal to one sixtieth of a minute.
系列中第二个事物
Something that is number two in a series.
时间单位,历史上和通常定义为一分钟的六十分之一,国际单位制更精确地定义为铯-133在绝对零度和静止状态下两个超精细能级之间跃迁对应的9,192,631,770个辐射周期的持续时间
A unit of time historically and commonly defined as a sixtieth of a minute which the International System of Units more precisely defines as the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of caesium-133 in a ground state at a temperature of absolute zero and at rest.
在比赛或战斗中支持他人的人,如决斗者的助手
One who supports another in a contest or combat, such as a dueller's assistant.
一分钟的六十分之一；国际单位制采用的基本时间单位
1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites
在等级、质量等方面仅次于第一的事物
Something that is next in rank, quality, precedence, position, status, or authority.
角度单位,等于一弧分的六十分之一或一度的1/3600
A unit of angle equal to one-sixtieth of a minute of arc or one part in 3600 of a degree.
支持或附议动议的人,或在某些会议中通过决议所需的行为
One who supports or seconds a motion, or the act itself, as required in certain meetings to pass judgement etc.
极短的时间
an indefinitely short time
比赛或竞赛中仅次于第一名的位置
The place that is next below or after first in a race or contest.
棒球队中守备靠近内场第二垒的球员的防守位置
the fielding position of the player on a baseball team who is stationed near the second of the bases in the infield
第二次机会或尝试以达成第一次未完成之事
A chance or attempt to achieve what should have been done the first time, usually indicating success this time around. (See second-guess.)
自然音阶中相邻两音之间的音程
The interval between two adjacent notes in a diatonic scale (either or both of them may be raised or lowered from the basic scale via any type of accidental).
发动机的二档
The second gear of an engine.
二垒
Second base.
在荣誉争端中负责调解或安排决斗的代理人
The agent of a party to an honour dispute whose role was to try to resolve the dispute or to make the necessary arrangements for a duel.
被任命协助小队长的幼童军
A Cub Scout appointed to assist a sixer.
The race was decided by a single second.
这场比赛以一秒之差决出胜负。
用法提示：名词，表示时间单位“秒”。
Wait a second, I need to grab my keys.
稍等一下，我需要拿钥匙。
用法提示：名词，表示“片刻，一会儿”。
He finished the task in just 30 seconds.
他仅用30秒就完成了任务。
用法提示：名词复数形式，表示多个时间单位“秒”。
表示持续时间时，second 用复数 seconds，前面接数量词，常与 for 连用。
She held her breath for thirty seconds.
她屏住呼吸三十秒。
口语中表示“很快、立刻”，相当于 in a moment，用单数 a second。
Don't worry, I'll be there in a second.
别担心，我马上就到。
英式英语常用 the second of June 表示日期，美式英语多说 June second。
Her birthday is the second of June.
她的生日是六月二日。
grammar · medium
易错句子The runner finished the race in fifty-eight second.
正确表达The runner finished the race in fifty-eight seconds.
英语可数名词前有大于一的数词时必须用复数形式，所以 fifty-eight 后要用 seconds。汉语的“秒”没有复数变化，学习者容易漏掉词尾 -s。
grammar · medium
易错句子Wait second, I need to check my notes.
正确表达Wait a second, I need to check my notes.
second 表示“一会儿”时是可数名词，单数形式前必须有限定词，故用 a second。汉语名词可以不带冠词光杆使用，但英语单数可数名词不能单独出现。
grammar · medium
易错句子We took a ten seconds break between classes.
正确表达We took a ten-second break between classes.
“数词+单位名词”作前置定语修饰后面的名词时，单位名词要用单数并用连字符连成一个词，即 ten-second break；这里不表示复数数量，所以不能写成 ten seconds。
每秒
The data transfer rate is 100 megabits per second.
数据传输速率是每秒100兆比特。
每一秒
The clock ticks every second.
时钟每秒滴答一次。
秒针
The second hand on my watch is broken.
我手表上的秒针坏了。
一瞬间
He made a split-second decision to avoid the accident.
他瞬间做出决定以避免事故。
几秒钟内
The ambulance arrived within seconds of the call.
救护车在接到电话后几秒钟内就赶到了。
同为时间单位，常用于精确计时。
更大的时间单位，与秒和分钟组成时间体系。
更小的时间单位，用于高精度测量。
显示和测量时间的工具，通常显示秒。
专门用于精确计时秒数的工具。
重新考虑；疑虑
I had second thoughts about accepting the job offer.
我对接受这份工作产生了疑虑。
第二天性；习以为常的事情
After years of practice, playing the piano is second nature to her.
经过多年的练习，弹钢琴对她来说是第二天性。
立刻；马上
I'll be ready in a second.
我马上就好。
每一秒都很重要。
In the movie Armageddon, the character says 'Every second counts' to stress the urgency.
在电影《世界末日》中，角色说‘每一秒都很重要’以强调紧迫性。
一秒你热情如火，下一秒你冷若冰霜。
This line from Katy Perry's song 'Hot N Cold' uses 'one second' to describe sudden changes.
凯蒂·佩里的歌曲《Hot N Cold》中的这句歌词用‘one second’描述突然的变化。
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二垒
The runner stole second base in the bottom of the ninth inning.
跑垒员在第九局下半局盗上二垒。