unit  
noun uk/ˈjuː.nɪt/ us/ˈjuː.nɪt/
  (SEPARATE PART)                 
 B1 [ C ]单位;单元 
a single thing or a separate part of something larger
  Each unit of the text book focuses on a different grammar point. 课本的每个单元各有不同的语法重点。 
 The first year of the course is divided into four units. 该课程的第一年分为4个单元。 
 The company plans to split into two or three units. 公司计划拆分成三个部分。 
  [ C ](家具或设备的)组合件,配件 
a piece of furniture or equipment that is intended to be fitted as a part of a set of similar or matching pieces
  kitchen/shelf/sink units 厨房/书架/水槽组合件 
  [ C ]小机器,装置;机件,组件 
a small machine or part of a machine that has a particular purpose
  the central processing unit of a computer 计算机的中央处理器 
 a waste-disposal unit 废物处理装置 
  [ C ] business specialized(商品的)(一)件,(一)套 
a single complete product of the type that a business sells
  [ C ] US(公寓楼的)单元,单位 
a single apartment in a bigger building
  The old house has been divided up into three rental units. 这栋老房子被分成三套住房出租。 
 a public housing unit 一套公共住房 
 - More examples
 - The company announced plans to increase production to 10 000 units per month.
 - The coursework is divided into three units, and you are expected to complete Unit 1 this term.
 - I'd love to replace my old kitchen units - can you tell me the price of this particular drawer unit?
 - It would be better if products like crisps showed how much salt they contain per unit, not per 100 g.
 - If one carton contains 12 units, then you'd better order 10 cartons.
 
  (PEOPLE)      
 C1 [ C, + sing/pl verb ](尤指具有特定目的的)班组,小队 
a group of people living or working together, especially for a particular purpose
  the traditional family unit 传统的家庭单位 
 Both soldiers spent two weeks in training before being allowed to rejoin their unit (= the particular part of the army to which they belonged). 两名士兵均在接受了两周的训练后才被允许归队。 
 Dr Nussbaum is director of the Civil Liberties Research Unit at King's College, London. 努斯鲍姆博士是伦敦国王学院公民自由研究中心的主任。 
 - More examples
 - a light/heavy infantry unit
 - The march will be heavily policed by an anti-riot unit.
 - In most countries, the family unit is still the cornerstone of society.
 
  (MEASUREMENT)         
  [ C ](计量)单位,单元 
a standard measure that is used to express amounts
  A centimetre is a unit of length. 厘米是长度单位。 
 The standard unit of currency in the US is the dollar. 美国的标准货币单位是美元。 
  [ C ] UK酒精单位 
a standard measure of alcohol
  Experts say that women should not drink more than 14 units of alcohol a week. 专家称妇女每周饮酒不要超过14个酒精单位。 
   (HOSPITAL DEPARTMENT)      
  [ C ](医院里的)科室;病区 
a department in a hospital for the treatment of people with similar illnesses or conditions
  She's in the burns/paediatric/psychiatric unit. 她在烧伤科/儿科/精神科。 
   (SINGLE NUMBER)        
 [ C ](0到9)个位数 
any whole number less than ten
  Tens go in the left-hand column and units in the right. 十位数在左栏,个位数在右栏。 
  [ C ] mathematics specialized(数字)1 
the number 1