sector

• 名词，指某个领域、经济、社会或系统中具有特定特征或功能的独立部分或分支。

A noun referring to a distinct part or division of an area, economy, society, or system, often defined by specific characteristics or functions.

1. Economic or business areaB1formal

   A distinct part of an economy, society, or industry.

   部门

   • The technology sector has grown rapidly this year.
   • She works in the public sector as a teacher.
   • Investors are focusing on the renewable energy sector.

   同义词areabranchdivisionfieldindustrymarketrealmsegmentspheretrade

2. Geometric shapeB2formal

   A part of a circle bounded by two radii and the arc between them.

   扇形

   • The pizza was cut into eight equal sectors.
   • The angle of the sector is 60 degrees.
   • Calculate the area of the sector using the formula.

   同义词slicewedge

3. Military or strategic areaB2formal

   A designated area or zone for military operations or administrative purposes.

   战区

   • The troops advanced into the northern sector of the city.
   • The general ordered a retreat from the contested sector.
   • Each battalion was assigned a specific sector to defend.

   同义词areadistrictprecinctregionsectionzone