20.The disappearance of the buffalo, the main food supply of the wild Indians, had made them more tractable and more willing to surrender the freedom of the hunter for the routine of the reservation, ranch, or wheat field.
野生印第安人的主要食物来源——水牛的消失,使他们变得更容易驯服, 也更愿意放弃猎人的自由, 转而去保留地、牧场或麦田的日常活动。机翻