under the banner of
成語所屬單字banner
under the banner of — 慣用語
1. while supporting, or claiming to support, a particular idea, group, or cause; do
1.慣用語
釋義
以……為號召；在……的旗幟下
while supporting, or claiming to support, a particular idea, group, or cause; doing something in the name of a stated set of values.
例句
The volunteers worked all summer under the banner of free public education for every child.
Several small parties joined the election under the banner of a single green movement.