average

medium, median, average

这些形容词均含“中等的、平均的、适中的”之意。
medium: 指按照某种标准来说是适中或中等的，这种标准可以是通过仪器测量而来，也可能是凭经验而得出。
median: 指中间位置的，统计学上指处于中间位置的一个数的。
average: 通常用来形容优劣难分的平庸或折衷情况，也指理论上的平均标准。

名词 average:

1. a statistic describing the location of a distribution
   同义词：norm

动词 average:

1. amount to or come to an average, without loss or gain
   同义词：average out
2. achieve or reach on average
3. compute the average of
   同义词：average out

形容词 average:

1. approximating the statistical norm or average or expected value
   同义词：mean
2. lacking special distinction, rank, or status; commonly encountered
   同义词：ordinary
3. lacking exceptional quality or ability
   同义词：fair, mediocre, middling
4. around the middle of a scale of evaluation of physical measures
   同义词：intermediate, medium
5. relating to or constituting the most frequent value in a distribution
   同义词：modal
6. relating to or constituting the middle value of an ordered set of values (or the average of the middle two in a set with an even number of values)
   同义词：median

1. The average of 4,6 and 8 is 6.
   4,6, 8的平均数是6。
2. Tom's work at school is above the average.
   汤姆的功课是中上。
3. The average age of the boys in this class is fifteen.
   本班男生的平均年龄是十五岁。

av.er.age

n.Abbr. av.,avg.（名词）缩写 av.,avg.
Mathematics
【数学】
A number that typifies a set of numbers of which it is a function.
平均数：一个代表一组作为整体的数的特征的值
See arithmetic mean
参见 arithmetic mean

An intermediate level or degree:
平均水准：一种中等的水平或程度：
例句：
near the average in size.
大小接近平均值

The usual or ordinary kind or quality:
平均状态：指通常的或一般的类型或性质：
例句：
Although the wines vary, the average is quite good.
尽管每种酒各不相同，平均水准很不错

Sports The ratio of a team`s or player`s successful performances such as wins, hits, or goals, divided by total opportunities for successful performance, such as games, times at bat, or shots:
【体育运动】 平均率：某一运动队或运动员之成功次数，如赢球、击球、射门与成功的总机遇如比赛次数的比率，代表平均成绩：
例句：
finished the season with a .500 average; a batting average of .274.
以一个500分的平均成绩结束了本赛季；平均274分的击球成绩

Law
【法律】
The loss of a ship or cargo, caused by damage at sea.
海损：由于海上风险造成的船或货的损失
The incurrence of damage or loss of a ship or a cargo at sea.
海损损失：因海损使船货受损的情况
The equitable distribution of such a loss among concerned parties.
海损分担：海损在有关方面之间的平均分担
A charge incurred through such a loss.
海损索赔：因海损而导致的索赔
Nautical Small expenses or charges that are usually paid by the master of a ship.
【航海】 航海费用：通常由船长负责支付的小额费用或支出
adj.（形容词）
Mathematics Of, relating to, or constituting an average.
【数学】 平均的：属于、关于或组成一个平均数的
Being intermediate between extremes, as on a scale:
中等的：在数量上位于两极端之间的：
例句：
a player of average ability.
一个中等能力的运动员

Usual or ordinary in kind or character:
普通的：在类型或特征上通常的或寻常的：
例句：
a poll of average people; average eyesight.
普通人群落；中等视力

Assessed in accordance with the laws of average.
海损法的：符合海损法的估算的
v.（动词）
av.er.aged,av.er.ag.ing,av.er.ag.es
v.tr.（及物动词）
Mathematics To calculate the average of:
【数学】 计算…的平均值：
例句：
average a set of numbers.
取一组数的平均值

To do or have an average of:
调和，拉平：使具有平均程度：
例句：
averaged three hours of work a day.
将每天的工作量调为三小时

To distribute proportionately:
分摊：按固定比例分担：
例句：
average one`s income over four years so as to minimize the tax rate.
将某人的收入分至四年从而使税赋降至最小程度

v.intr.（不及物动词）
To be or amount to an average:
平均：作为或达到一个中间值：
例句：
Some sparrows are six inches long, but they average smaller. Our expenses averaged out to 45 dollars per day.
有些麻雀可达六英寸长，但它们平均要小些。我们的支出平均每天四十五美元

To buy or sell more goods or shares to obtain more than an average price.
维持（有利的）平均价格：买进或卖出额外的货物或股票以维持高于平均的价格

来源：
From Middle English averay [charge above the cost of freight]
源自 中古英语 averay [要价高于货物成本]
from Old French avarie
源自 古法语 avarie
from Old Italian avaria [duty]
源自 古意大利语 avaria [税赋]
from Arabic `aw3royah [damaged goods]
源自 阿拉伯语 `aw3royah [受损的货物]
from `awar [blemish]
源自 `awar [瑕]

【引伸】
av.eragely
adv.（副词）
av.erageness
n.（名词）
<参考词汇><同义词>average,medium,mediocre,fair,middling,indifferent,tolerableThese adjectives indicate rank or position around the middle of a scale of evaluation.
这些形容词均表示某一估价之中间附近之等级或位置。
Average and medium apply to what is midway between extremes on such a scale;usually they imply both sufficiency and lack of distinction:
Average
a novel of average merit;
medium 用于指某一程度两极值间的中部；通常它们均指充分性及不加区别性：
例句：
一个中等优秀的小说；

例句：
an orange of medium size.
中等大小的桔子。

Mediocre stresses the undistinguished aspect of what is average:
Mediocre 强调了作为中等者不加区分的方面：
例句：
.The caliber of the students . . . has gone from mediocre to above average. (Judy Pasternak).What isfair is passable but substantially below excellent:
.学生们的能力…，已从普通升为高于中等. （朱迪·帕斯特耐克）。而fair 指可及格的但次于优秀的：

例句：
a fair student;
一个尚好的学生；

例句：
in fair health;
健康状况尚好；

例句：
have a fair idea of what`s going on.
对发生的事有清晰的概念。

Middling refers to middle position between best and worst:
Middling 指最好与最差的中心位置：
例句：
gave a middling performance at best.
尽力给予中等程度的表演。

Indifferent applies to what is of less than striking character, being neither very good nor very bad:
Indifferent 指不会引起轰动的特征，既不很好也不很差：
例句：
.One and the same thing can at the same time be good, bad, and indifferent, e.g., music is good to the melancholy, bad to those who mourn, and neither good nor bad to the deaf. (Spinoza).Something that istolerable is merely acceptable:
.同一件事物在同一时间可以是好的、坏的、一般的，例如，音乐对忧郁者来说是好的，对悲哀者来说是坏的，对耳聋者来说既不好也不坏. （斯宾诺莎）。tolerable 只指可接受的事物：

例句：
prepared a tolerable dinner.
准备了凑合的晚餐。