迷路时，原路返回是明智的。

When lost, it's wise to ___retrace ___your ___steps.

他试图原路返回寻找丢失的钥匙。

He tried to ___retrace ___his ___steps to find his lost keys.

为了找到出口，我们不得不原路返回。

In order to find the exit, we had to ___retrace ___our ___steps.