Keystoner

例句：

1. 1.The Keystoners were the first settlers to arrive in the area.
   基斯顿人是第一批到达该地区的定居者。
2. 2.The Keystoners have a long history of farming and trading.
   基斯顿人有着悠久的农业和贸易历史。
3. 3. The Keystoners are known for their hospitality and generosity.
   基斯顿人以他们的好客和慷慨而闻名。