| 单词 | the arithmetic mean |
| 释义 | the arithmetic mean —mean /miːn/ adjective (NOT KIND) ► B2 unkind or unpleasant: » Stop being so mean to me!» She just said it to be mean.Thesaurus+: ↑Unkind, cruel and unfeeling , ↑Violent or aggressive , ↑Treating people or animals badly , ↑Insults and abuse• • • Extra Examples:» He's as mean as they come.» You shouldn't have been so mean to your mother - she deserves better.» And she didn't invite him? That was a bit mean!» Stop being so mean to your brother!» It was mean of him to make her stay late.adjective MAINLY UK (NOT GENEROUS) ► B2 not willing to give or share things, especially money: » He's too mean to buy her a ring.» My landlord's very mean with the heating - it's only on for two hours each day.Thesaurus+: ↑Mean with money• • • Extra Examples:» She's really quite unpleasant about other people and she's as mean as hell.» He's a mean old scrooge!» "That was amazingly generous of you!" "Well, that was a two-edged comment - are you saying I'm usually mean?"» He's too mean to buy any new clothes.» She only gave you 50p? That was a bit mean.adjective MAINLY US (VIOLENT) ► F0 frightening and likely to become violent: » a mean and angry mob» a mean-looking youthThesaurus+: ↑Violent or aggressive , ↑Unkind, cruel and unfeeling , ↑Treating people or animals badlyadjective [before noun] INFORMAL (GOOD) ► F0 very good: » She's a mean piano player.» She plays a mean piano (= she plays very well).Thesaurus+: ↑Informal words for good , ↑Good, better and best , ↑Quite good, or not very goodadjective [before noun] SPECIALIZED (MATHEMATICS) ► C2 (in mathematics) a mean number is an average number: » a mean value» Their mean weight was 76.4 kilos.Thesaurus+: ↑StatisticsThesaurus+: ↑Averagesnoun [S] (ALSO the arithmetic mean) specialized (MATHEMATICS) ► F0 (in mathematics) the result you get by adding two or more amounts together and dividing the total by the number of amounts: » The mean of 5, 4, 10, and 15 is 8.5.→ COMPARE AVERAGE(Cf. ↑average) noun (AMOUNT)Thesaurus+: ↑StatisticsThesaurus+: ↑Averagesnoun [S] FORMAL (METHOD) ► F0 a quality or way of doing something that is in the middle of two completely different qualities or ways of doing something: » We need to find a mean between exam questions that are too difficult and those that are too easy.Thesaurus+: ↑Ways of achieving thingsThesaurus+: ↑Averagesverb (meant, meant) (EXPRESS) ↑Verb Endings for mean A2 [T] to express or represent something such as an idea, thought, or fact: » What does this word mean?» [+ that] These figures mean that almost six percent of the working population is unemployed.» What do you mean by that remark?» She's quite odd though. Do you know what I mean?Thesaurus+: ↑Meaning and significance , ↑Typifying, illustrating and exemplifyingF0 [T] used to add emphasis to what you are saying: » I want you home by midnight. And I mean midnight.» Give it back now! I mean it.Thesaurus+: ↑Meaning and significance , ↑Typifying, illustrating and exemplifyingWord Builder:–Nouns: meaning–Adjectives: meaningful, meaningless–Verbs: mean–Adverbs: meaningfully• • • Extra Examples:» When he said three o'clock, I thought he meant in the afternoon.» Charges are made on a sliding scale, which means that the amount you must pay increases with the level of your income.» If you don't know what the word means, look it up in a dictionary.» You should take it as a compliment when I fall asleep in your company - it means I'm relaxed.» A continuous white line in the middle of the road means no overtaking.verb [I or T] (meant, meant) (INTEND) ↑Verb Endings for mean ► B1 to intend: » I'm sorry if I offended you - I didn't mean any harm.» The books with large print are meant for our partially sighted readers.» [+ to infinitive] I've been meaning to phone you all week.» Do you think she meant to say 9 a.m. instead of 9 p.m.?» [+ obj + to infinitive ] This exercise isn't meant to be difficult.» They didn't mean for her to read the letter.Thesaurus+: ↑Planning, expecting and arranging , ↑Plotting and trapping• • • Extra Examples:» I didn't mean to be rude - it just came out like that.» He doesn't really mean it - he's just being contrary.» He's always making flattering remarks, but he doesn't really mean them.» I didn't mean to upset her - it was just a bit of fun.» He didn't mean it - he said it in the heat of the moment.verb [T] (meant, meant) (HAVE IMPORTANCE) ↑Verb Endings for mean ► B1 to have an important emotional effect on someone: » It wasn't a valuable picture but it meant a lot to me.» Possessions mean nothing to him.Thesaurus+: ↑Meaning and significance , ↑Typifying, illustrating and exemplifying• • • Extra Examples:» Her children mean all the world to her.» Gerald means nothing to me now.» Her career means everything to her.» Nothing means more to me than my children's happiness.» Her approval meant a lot to me.verb [T] (meant, meant) (HAVE RESULT) ↑Verb Endings for mean ► B1 to have a particular result: » Lower costs mean lower prices.» [+ that] Advances in electronics mean that the technology is already available.» [+ -ing verb] If we want to catch the 7.30 train, that will mean leaving the house at 6.00.Thesaurus+: ↑Meaning and significance , ↑Typifying, illustrating and exemplifying• • • Extra Examples:» High acidity levels in the water mean that the fish are not so large.» Shortages mean that even staples like bread are difficult to find.» In a way I'd prefer it if they didn't come, because it would mean extra work.» Let's say that the journey takes three hours, that means you'll arrive at two o'clock.» The irregularity of English spelling means that it is easy to make mistakes. |
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