没有电话和手机，就失去了与外界联系的方法。

Without fixed phone and cell phone, they lost contact with outside world entirely.

youdao

列车员：先生，我们和外界失去了联系。

Train Conductor: Sir, we lost contact.

youdao

列车员：先生，我们和外界失去了联系。

Train Conductor: Sir, we lost contact.

youdao