diàn / lí / céng / huì / fǎn / shè / mǒu / xiē / wú / xiàn / diàn / bō / bāng / zhù / xìn / hào / chuán / bō / de / gèng / yuǎn

电离层会反射某些无线电波，帮助信号传播得更远。

The ionosphere reflects some radio waves and helps signals travel farther.