Keystone State

例句：

1. 1. The Keystone State is known for its stunning natural beauty and outdoor activities.
   科罗拉多州以其壮观的自然风光和户外活动而闻名。
2. 2.The Keystone State is home to many national parks and wildlife reserves.
   科罗拉多州拥有许多国家公园和野生动物保护区。
3. 3. The Keystone State is a popular destination for tourists seeking outdoor adventures.
   科罗拉多州是寻求户外冒险的游客的热门目的地。