例1,这句是定语从句吧,who在从句中充当了主语,而同位语从句的who/that不充当任何成分例2, belief 可以引导同位语从句,它和new,idea,fact,promise,question,doubt,thought意思相似,并且that不充当任何成分,后面句子意思完整给你看个句子The idea that computers can recognize human voices surprises many people这是标准的同位语从句,和你那句一样