他驾驶这架飞机对卡拉·哈里的野生动物进行空中飞行调查，同时他和迪丽娅还对鬣狗的群体生活进行了近距离观察以便了解它们令人惊奇的集群行为。
He used the plane to make aerial surveys of the Kalahari's wildlife, and he and Delia conducted close observation of the social life of hyenas, learning about their surprisingly communal behavior.
九岁的双胞胎姐妹哈丽特和奥利维娅的母亲、46岁的鲁丝？莱斯对校长的看法表示赞同。
His views were endorsed by Ruth Rice, 46, who has twins Harriet and Olivia, nine, at the school.
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