Any of several plants of the genera Oxytropis and Astragalus in the pea family,which are widespread in the western and central United States and cause severe poisoning when eaten by livestock.是什么意思_Any of several plants of the genera Oxytropis and Astragalus in the pea family,which are widespread in the western and central United States and cause severe poisoning when eaten by livestock.在线翻译_英语_读音_用法_例句