As we travelled, we used a high-frequency radio network to talk to the tribes as we approached, so we could ask their permission to come through.

我们在旅行中用高频无线电与当地部族联系，请求他们准许我们通过。

youdao

As we travelled, we used a high-frequency radio network to talk to the tribes as we approached, so we could ask their permission to come through.

我们在旅行中用高频无线电与当地部族联系，请求他们准许我们通过。

youdao