A city of southwest Idaho on the Boise River west of Boise. It was built on the site of an Oregon Trail camping ground. Population, 18, 400.是什么意思_A city of southwest Idaho on the Boise River west of Boise. It was built on the site of an Oregon Trail camping ground. Population, 18, 400.在线翻译_英语_读音_用法_例句