sector基本解释
n,部门；扇形，扇区；象限仪；函数尺,同近
...the nation's manufacturing sector..…该国的制造部门。
部门；扇形，扇区；象限仪；函数尺英释nna part of an area of activity, especially of business, trade etc
private sector,私营部门；私营成分.短语
