翻译：其中,蚂蚁的世界最近开始成为研究的对象,并且这种认为蚂蚁展现出来的智慧的火花的想法绝对没有被参加调查的人驳回.
语法：前面的语法没有难点
讲讲这句 and the idea that ants demonstrate sparks of cognition has certainly not been rejected by those involved in these investigations.
that引导了同位语从句,用于连接对先行词idea的说明,that在同位语从句中不占成分,但不能省略
同位语从句到cognition这个词就停了,后面的has certainly not been rejected by...的动作是针对idea的.欢迎追问