/'sektə(r); `sɛktɚ/
n
1 part of a circle lying between two straight lines drawn from the centre to the circumference 扇形. => illus at circle 见 circle 插图.
2 part or branch of a particular area of activity, esp of a country's economy （活动领域的）部门; （尤指）经济领域
*the manu`facturing sector, ie all the manufacturing industries of a country 制造业
* the `service sector, eg hotels, restaurants, etc 服务性行业.
3 any of the parts of a battle area, or of an area under military control 战区; 防区
*an enemy attack in the southern sector 敌军对南部战区的进攻.

n[C]
[Date: 1500-1600; Language: Latin;Origin: secare; SECTION¹]
a part of an area of activity, especially of business, trade etc
sector of
　the agricultural sector of the economy
public/private sector
(=business controlled by the government or by private companies)
one of the parts into which an area is divided, especially for military purposes