如何理解这句话:"She must have tried to come back to them and got lost ," she added.

问题描述:

如何理解这句话:"She must have tried to come back to them and got lost ," she added.

翻译:“她一定是已经尝试过回到他们身边,并且还是走丢了”她补充道.
引号里的应该是虚拟语气,表示推测已经做过某事.