1. 附加，追加，增加，添加，增添，补充，加
2. 【数】加法，加算
3. 增加的人，增建部分，附加物，增加物，附加部分
4. 【律】头衔，称号，官衔

1. [U]加; 加法 adding, especially calculating the total of two or more numbers
2. [C]增加的人〔事物〕 person or thing added or joined

1. a component that is added to something to improve it;

   "the addition of a bathroom was a major improvement"
   "the addition of cinnamon improved the flavor"
   

2. the act of adding one thing to another;

   "the addition of flowers created a pleasing effect"
   "the addition of a leap day every four years"
   

3. a quantity that is added;

   "there was an addition to property taxes this year"
   "they recorded the cattle's gain in weight over a period of weeks"
   

4. something added to what you already have;

   "the librarian shelved the new accessions"
   "he was a new addition to the staff"
   

5. a suburban area laid out in streets and lots for a future residential area

6. the arithmetic operation of summing; calculating the sum of two or more numbers;

   "the summation of four and three gives seven"
   "four plus three equals seven"
   

1.另外;加之;除…之外
You usein addition when you want to mention another item connected with the subject you are discussing.

e.g. Part-time English classes are offered. Inaddition, students can take classes in word-processing and computing...
开设了非全日制的英语班。另外，学生可以修读文字处理和计算机课程。
e.g. There's a postage and packing fee inaddition to the repair charge.
除修理费之外还有邮寄和包装费。

2.增加物；添加物
Anaddition to something is a thing which is added to it.

addition的意思

e.g. This is a fine book; a worthyaddition to the Cambridge Encyclopedia series...
这是一本好书，对剑桥百科全书系列是一个很好的补充。
e.g. This plywoodaddition helps to strengthen the structure.
多层胶合板有助于加固结构。

3.增加；添加
The addition of something is the fact that it is added to something else.

e.g. It was completely refurbished in 1987, with theaddition of a picnic site.
它在1987年经过了彻底翻修，加盖了一个野餐点。

4.加；算总数
addition is the process of calculating the total of two or more numbers.

e.g. ...simpleaddition and subtraction problems.
简单的加减题

1. 加法：4.加法(addition)交换律(commutative law)和结合律(associative law)在有理数加法运算中依然成立. 有理数乘法(multiplication)法则:乘方:几个相同的因数相乘的运算叫做乘方(power),乘方的结果叫做幂. (power)如果有n个a相乘,

2. 相加：协同作用中又分为相加(addition)和增强(potentiation),前者指合用的总效应等于单用效应相加之和,后者指合用效应大于单用效应之和. 拮抗作用中又分相减(subtraction)和抵消(counteraction),前者指合用时的效应小于单用时的效应,

3. 增加：而每年新发现的油田又使原油储量有所增加(addition). 但增加量和生产量每年与每年不同,如果增加量大于产量,则储量会增加;反之,则会减少. 1996年到2000年,在累进的基础上,平均每年常规轻、重原油的增加量(addition)是当年产量(production)的105%.

4.

4. 加成：端粒是位于每条染色体的末端,在DNA复制时维持染色体结构完整的特殊结构. DNA损伤,由接触致癌剂引起的基因组损伤,导致编码序列中的异常,如:点突变、扩增、缺失、加成(addition)或在染色体含量中的异常(非整倍性).

1. The addition of flour will thicken gravy.
   加了面粉肉汁会变稠。
2. That is a simple addition.
   那是简单的加法。
3. We've just had an addition to the family.
   我们家里刚刚添了一口人。
4. Such an outfit would be a useful addition to my wardrobe.
   在我的服装中添置这一套服装会有用的。

in addition (to)

另外,加之,除…之外(还)as an extra person, thing or circumstance

• A few sums in simple addition.

  出自：W. S. Maugham

There is, in addition, one further point to make.

此外，还有一点要说。

Pasta's basic ingredients are flour and water, sometimes with the addition of eggs or oil.

意大利面制品的主要成分是面粉和水，有时加鸡蛋和食用油。

In addition to these arrangements, extra ambulances will be on duty until midnight.

除了这些安排以外，另增救护车值班至午夜。

an addition to the family (= another child)

这家新添的一口人（又生了一个孩子）

(North Amercian English)to build a new addition onto a house

扩建房子

children learning addition and subtraction

学习加减的儿童

the latest addition to our range of cars

我们汽车系列新增加的款式

There's a postage and packing fee in addition to the repair charge.

除修理费之外还有邮寄和包装费。

This is a fine book; a worthy addition to the Cambridge Encyclopedia series...

这是一本好书，对剑桥百科全书系列是一个很好的补充。

This plywood addition helps to strengthen the structure.

多层胶合板有助于加固结构。

It was completely refurbished in 1987, with the addition of a picnic site.

它在1987年经过了彻底翻修，加盖了一个野餐点。

...simple addition and subtraction problems.

简单的加减题

Part-time English classes are offered. In addition, students can take classes in word-processing and computing...

开设了非全日制的英语班。另外，学生可以修读文字处理和计算机课程。

The new addition makes China the 5 th largest gold reserve holder in the world.

在各国公布的黄金储备中,我国排名第五.

In addition to copper, there are many other metals which are good conductors.

除了铜之外, 还有很多其他金属都是良导体.

In addition to the killed and wounded, many were missing.

除了伤亡之外, 还有许多人失踪.

In addition to the impressiveness of the settings , there is a use of the camera which at times seems magical.

除了布景的感染力外, 摄影机的使用技巧有时显出不可思议的效果.

That is a simple addition.

那是简单的加法.

The plus sign is used in addition and the minus is used in subtraction.

加号用于加法;减号用于减法.

In addition to natural rivers, the Chinese working people have dug many canals.

除了天然的河流之外, 中国劳动人民还开挖了许多运河.

In addition to his salary, he has a bonus of 25 yuan per month.

除工资外, 他每月还有二十五元钱奖金.

They've just had an addition to the family.

他们家里刚刚添了一口人.

Use a good waterproof adhesive in addition to the screws.

除了螺钉外,还要用优质防水黏合剂.

In addition to giving a general introduction to computers, the course also provides practical experience.

课程除了介绍一般电脑知识外, 还提供实际操作的机会.

You do that in addition?

这是你额外的工作 吗 ?

You need money and time, in addition, you need diligence.

你需要金钱和时间, 此外你还需要努力.

She gets various perquisites in addition to her wages.

她工资以外,还有各种津贴.

In addition to the tractor, we have acquired a new rice transplanter.

除了拖拉机, 我们又添了一台插秧机.

1. addition的基本意思是“加”,指将两个或两个以上的人或事物合在一起,作此解时为不可数名词,但有时其前可加不定冠词,作“加法”解。
2. addition也可指“增加的人〔事物〕”,指在原有的基础上增加的人或物,此时为可数名词。

1. in addition to意为“加在…上”或“不但…”，其中to是介词，在这不代表不定式，因此用in addition to doing this,而不是in addition to do this。

addition，appendix，attachment，supplement，accessory

这些名词均含“附加物、增加物”之意。

addition仅强调数量的增加。

appendix指书末的附录。

attachment指用于扩大原物用途的附件。

supplement主要指使书、报等正文更完善而额外增加的部分。

accessory作“附件”解时，与attachment同义，可互换，但还指增加美观的附属品。

• ☆ 14世纪中期进入英语，直接源自古法语的addition；最初源自拉丁语的additiionem，意为增加。