gǔ / dài / jiāo / tōng / bú / biàn / zhōu / chē / shì / zuì / zhǔ / yào / de / chū / xíng / fāng / shì

古代交通不便，舟车是最主要的出行方式。

In ancient times, when transport was inconvenient, boats and carriages were the main means of travel.