he started to expand his mind and think about what else was

原句的意思是“他开始拓展思维,并且考虑除此之外还有哪些事情.”was out there不能直译,看句子据我大概猜测的语言环境,推断what else was out there的意思应该是事情的表面下还隐藏了什么或者与此相关联的还有什么.was out there英语的表达和中文的成语“弦外之音”或者“言外之意”有异曲同工之妙.因为没有具体的语言文章环境,我的回答也只能这么多了,希望您能从中领会些out there的含义.