zài / méi / yǒu / wǎng / luò / de / qíng / kuàng / xià / tā / men / yòng / mò / ěr / sī / diàn / mǎ / chuán / dì / xìn / xī在没有网络的情况下,他们用莫尔斯电码传递信息。Without a network connection, they used Morse code to transmit information.