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n(1)平均數(shù)(amount found by adding together a group of quantities and then dividing the total by the number of items)[C]：The～of 5，6 and 7 is 6.5，6和7的平均值為6。An～of five boys are absent each day.每天平均有五個(gè)男孩缺席。graduate with a B～以平均成績(jī)B畢業(yè);〖同〗medium;〖反〗maximum;minimum;

(2)平均標(biāo)準(zhǔn)，一般水平(standard or level regarded as usual or ordinary)[U]：be (well)above/(well)below/up to～in one's lessons功課(足足)超過(guò)/(大大)低于/達(dá)到一般水平;come close to～in one's lessons 功課接近一般水平;The crops this year is 10 percent above the～.今年的莊稼收成高于通常產(chǎn)量的10%。50 working hours a week is about the～.每周工作50小時(shí)是平平常常的。His mind is about the～.他的智力一般。

on (the/an) average 平均：On(the)～each of the horses runs in 10 races a year.這些馬平均每匹每年參加比賽10次。

adj(1)平均的(found by working out the average)[作attrib]：the～price/temperature/speed/rainfall 平均價(jià)/溫度/速度/降雨量;The country has an～population density of 110 persons per square mile.這個(gè)國(guó)家的平均人口密度為每平方英里110人。The～age of the students is 21.6 years.這些學(xué)生的平均年齡為21.6歲。His～income is 50 pounds a week.他的平均收入為每周50英鎊。〖同〗 mean，medium;〖反〗maximum，minimum;

(2)一般水平的，平常的(of the ordinary of usual standard;neither specially good，etc nor specially bad，etc)：be of～intelligence/height 具有一般智力/高度;an～student/movie/piece of work 一般的學(xué)生/電影/活兒;a sheet of paper of～thickness 一張一般厚度的紙;above～inflation 高于一般的物價(jià)上漲率;Her work is above～.她的工作比一般的強(qiáng)。There was nothing special about it.It was only～.這沒(méi)有什么特別之處，僅僅是平平常常而已。〖同〗typical，ordinary，common，normal，usual，moderate;〖反〗unusual，uncommon，special，remarkable;

v(1)求平均數(shù)(find or calculate the average of a set of numbers)[I，T+n]：If you～5，6 and 7，you get 6. 5，6和7的平均數(shù)為6。do some～ing 作一些平均計(jì)算;

(2)平均為(達(dá)到)(be，come to(a certain number or amount on average))[T+n，無(wú)pass]：His income/Her wages/The cost of living～d ￡1000 a month.他的收入/她的工資/生活費(fèi)平均為每月1000英鎊。The rainfall～d 10 inches in August.8月的降雨量平均為10英寸。The temperature～d 21℃.溫度平均為攝氏21度。Price increases～d about 11%.物價(jià)上漲率平均為11%左右。Wheat～s 60 pounds to a bushel.麥子每浦式耳平均60英鎊。Cars～45 miles to the gallon.汽車(chē)每加侖油平均可行駛45英里?！? hours work/30 miles a day 平均每天工作八小時(shí)/走30英里;

average out (at sth)(v adv)1)平均為(vi)：Her car's petrol consumption～d out at 2 gallons a day .她的汽車(chē)耗油量平均為每天兩加侖。2)算出平均數(shù)(vt)：～out one's expenses at ￡10 per day/sb's profit at ￡5000 a year 算出每天的平均花費(fèi)為10英鎊/某人每年的平均利潤(rùn)為5000英鎊