unbiennium

例句：

1. 1.The government has announced a new ten-year plan for the country's development.
   政府已宣布了一项新的十年国家发展规划。
2. 2.The project will last for ten years, during which time we will work tirelessly to achieve our goals.
   该项目将持续十年，在此期间我们将不懈努力以实现我们的目标。
3. 3.During the unbiennium, the team worked diligently to complete the project on time.
   在十年周期内，团队勤奋工作以确保项目按时完成。