By simply turning his focus to one side, he would have easily exited his prison. Rather, due to his intent on one direction, he remained confined, captive.

• 如果简单地把注意力转向另一面，它也许已经轻而易举地逃出去了，但是由于它的执迷不悟要从一个方面逃出去，它仍然身陷囹圄。