group-purchasing organization 集体采购组织; gun position officer 发射阵地指挥官，副连长
大小写变形:GPO
实用场景例句
全部
The GPO is very busy at Christmas.
圣诞节时邮政总局十分繁忙.
辞典例句
英英释义
Noun
1. an agency of the legislative branch that provides printing and binding services for Congress and the departments and establishments of the federal government