| [/ˈsektə(r); ˋsɛktɚ/] n 用法:
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. 用法:
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. 用法:
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. |