n.每五年发生一次的事件
adj.每五年的，每隔五年发生一次的

The quinquennial review of the company's policies is due this year.
公司的五年政策审查将于今年进行。
The government announced a new quinquennial plan for economic development.
政府宣布了一个新的五年经济发展计划。
The festival takes place every quinquennial, attracting visitors from around the world.
这个节日每五年举行一次，吸引着来自世界各地的游客。
The quinquennial census is crucial for understanding demographic changes in the country.
五年一度的人口普查对于理解国家的人口结构变化至关重要。
The museum's quinquennial art exhibition showcases contemporary works from emerging artists.
博物馆的五年一次艺术展展示了新兴艺术家的当代作品。
It's been quinquennial since we last met; how time flies!
自上次见面以来已经五年了；时间真快！
The quinquennial budget planning involves forecasting economic trends over the next five years.
五年预算规划涉及对未来五年的经济趋势进行预测。
The university celebrates its quinquennial anniversary with a grand ceremony.
大学以盛大的仪式庆祝其成立五周年。
Environmental impact assessments are conducted on a quinquennial basis to monitor changes.
环境影响评估每五年进行一次，以监测变化。
The athletic championships are held on a quinquennial basis, fostering international sportsmanship.
世界田径锦标赛每五年举行一次，促进国际体育精神。