archdukedom

例句：

1. 1.The duchy of Tuscany is a region in Italy known for its beautiful landscapes and rich history.
   托斯卡纳公国是意大利的一个地区，以其美丽的风景和丰富的历史而闻名。
2. 2. The archdukes of the realm were often seen as symbols of power and authority.
   这个王国的公爵们常常被视为权力和权威的象征。
3. 3.The dukedom was divided into several smaller territories to accommodate the growing population.
   公爵领地被分成几个较小的领土，以容纳不断增长的人口。