反过来，始终反过来：把情况或问题颠倒过来，从反面看。

机器人是一种被编程执行多种任务的设备，并且可以重新编程以执行其他任务。

"We must be willing to take risks and embrace change if we want to achieve greatness."

The past is never dead. It's not even past.

法国人终其一生都在抱怨所有的事。