n(1)平均数(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的平均值为6。An～of five boys are absent each day.每天平均有五个男孩缺席。graduate with a B～以平均成绩B毕业;〖同〗medium;〖反〗maximum;minimum;

(2)平均标准，一般水平(standard or level regarded as usual or ordinary)[U]：be (well)above/(well)below/up to～in one's lessons功课(足足)超过/(大大)低于/达到一般水平;come close to～in one's lessons 功课接近一般水平;The crops this year is 10 percent above the～.今年的庄稼收成高于通常产量的10%。50 working hours a week is about the～.每周工作50小时是平平常常的。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.这些马平均每匹每年参加比赛10次。

adj(1)平均的(found by working out the average)[作attrib]：the～price/temperature/speed/rainfall 平均价/温度/速度/降雨量;The country has an～population density of 110 persons per square mile.这个国家的平均人口密度为每平方英里110人。The～age of the students is 21.6 years.这些学生的平均年龄为21.6岁。His～income is 50 pounds a week.他的平均收入为每周50英镑。〖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 一般的学生/电影/活儿;a sheet of paper of～thickness 一张一般厚度的纸;above～inflation 高于一般的物价上涨率;Her work is above～.她的工作比一般的强。There was nothing special about it.It was only～.这没有什么特别之处，仅仅是平平常常而已。〖同〗typical，ordinary，common，normal，usual，moderate;〖反〗unusual，uncommon，special，remarkable;

v(1)求平均数(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的平均数为6。do some～ing 作一些平均计算;

(2)平均为(达到)(be，come to(a certain number or amount on average))[T+n，无pass]：His income/Her wages/The cost of living～d ￡1000 a month.他的收入/她的工资/生活费平均为每月1000英镑。The rainfall～d 10 inches in August.8月的降雨量平均为10英寸。The temperature～d 21℃.温度平均为摄氏21度。Price increases～d about 11%.物价上涨率平均为11%左右。Wheat～s 60 pounds to a bushel.麦子每浦式耳平均60英镑。Cars～45 miles to the gallon.汽车每加仑油平均可行驶45英里。～8 hours work/30 miles a day 平均每天工作八小时/走30英里;

average out (at sth)(v adv)1)平均为(vi)：Her car's petrol consumption～d out at 2 gallons a day .她的汽车耗油量平均为每天两加仑。2)算出平均数(vt)：～out one's expenses at ￡10 per day/sb's profit at ￡5000 a year 算出每天的平均花费为10英镑/某人每年的平均利润为5000英镑