同义词是comprehend，意思是理解、领会、明白，例如：

1.The infinite distances of space are too great for the human mind to comprehend.太空的无垠距离遥远得让人类的大脑无法理解。

2.The concept of infinity is almost impossible for the human mind to comprehend.无穷的概念几乎是人类的大脑无法理解的。

3.She could not comprehend how someone would risk people's lives in that way.她不明白怎么会有人竟拿人们的生命那样去冒险。