| 释义 |
moment /ˈməʊm(ə)nt /noun1A very brief period of time: she was silent for a moment before replying a few moments later he returned to the office...- I had a brief moment of silent panic when I thought I'd chipped a tooth on a particularly hard bit.
- Setting aside the real world for a moment, let's return to a long time ago in a galaxy far, far away.
- He rubbed his hand over his eyes wearily and thought for a moment before replying.
Synonyms little while, short time, bit, minute, second, instant, split second informal sec, nanosecond, jiffy, jiff British informal tick, mo, two ticks 1.1An exact point in time: she would always remember the moment they met...- It is impossible to remember the exact moment I fell in love with music.
- The third series opens at the exact moment the last episode ended.
- But some moments will always be remembered just because they sum something up.
Synonyms point in time, point, time, hour, juncture, stage 1.2An appropriate time for doing something; an opportunity: I was waiting for the right moment to tell him...- We all have wonderful ideas hiding inside just waiting for the right moment to be let out.
- The MRF headquarters just waited for the right moment to publicise the matter as much as possible.
- By failing to protest at the right moment, I missed the chance of being heard.
1.3A particular stage in the development of something or in a course of events: one of the great moments in aviation history...- Many times the country has been marred at critical moments in its development, as was the case with the attack on the Pope.
- It is therefore exposed to a disproportionately high dose of chemicals at a critical moment of its development.
- We find ourselves at a historical moment in the course of a major change.
2 [mass noun] formal Importance: the issues were of little moment to the electorate...- Martyrs' relics and graves seemed of little moment in a world about to be consumed by fire.
- His diplomacy won over only the Illyrian king Genthius, whose support proved of little moment.
- It is therefore of little moment for the affected parties and, derivatively, for social policy.
Synonyms importance, import, significance, consequence, substance, note, mark, prominence, value, weight, concern, interest, gravity, seriousness 3 Physics A turning effect produced by a force acting at a distance on an object.The team used samarium, an element whose spin and orbital moments are opposite and vary with temperature....- Here's the sneaky part - we use that fact that atoms with the wrong moments are kicked out of the trap.
- The relative size of the control surface in relation to its location also will determine the magnitude of the moments.
3.1The magnitude of a turning effect produced by a force acting at a distance, expressed as the product of the force and the distance from its line of action to a given point.Hove et al. found that box fishes exhibit some of the smallest amplitude recoil moments known among fishes....- Stride length is probably limited more by optimisation of force moments by the nervous system than ROM.
4 Statistics A quantity that expresses the average or expected value of the first, second, third, or fourth power of the deviation of each component of a frequency distribution from a given value, typically mean or zero. The first moment is the mean, the second moment the variance, the third moment the skew, and the fourth moment the kurtosis.It follows from substitution and rearrangement that the expected value of the second moment of y about x is [(1 / k) + F ST]....- In that case, one has a finite value of the first moment, i.e., of the average jump length.
- In the absence of dominance, the expectation of the variance is a second moment in gene frequencies, and the variance of the variance a tractable fourth moment.
Phrases any moment (or at any moment) at the (or this) moment at this moment in time for the moment have a moment have one's (or its) moments in a moment live for the moment the moment —— moment of truth not a moment too soon not for a (or one) moment of the moment one moment (or just a moment) share a moment Origin Late Middle English: from Latin momentum (see momentum). The Latin word momentum is the source of our words moment and momentum (Old English). Its root is movere, ‘to move’. At the end of a bullfight the matador faces the bull and prepares to make the final sword thrust. In Spanish this is la hora de la verdad, translated into English as the moment of truth. The first recorded use was by the writer Ernest Hemingway in his 1932 book Death in the Afternoon.
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