the whole country (/nation) from top to bottom; from the leaders of the nation to all the people
❍ ～一片欢腾，热烈庆祝这伟大的胜利。The whole country was a scene of jubilation in celebrating the great victory.
❍ ～团结一致。There is solid unity throughout the nation.
举国上下jǔ ɡuó shànɡ xià
举：全。指全国的上上下下。the whole nation, the length and breadth of country, everyone in the country