名词
中文翻译：每十年一次的
同义词：
['decadely', "decadal例句：1. The quindecennial celebration of the city's founding was a huge success.（该城市成立120周年庆典非常成功。）"]
例句：
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1. The quindecennial celebration of the city's founding was a huge success.
该城市成立120周年庆典非常成功。
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2. Thequindecennial review of the project's progress is due next month.
该项目进展的120年回顾将于下月进行。
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3. The quindecennialcountdown to the new year has begun.
新年倒计时开始了，距离下一个120年还有120天。