yuǎn / gǔ / xiān / mín / céng / yòng / dāo / gēng / huǒ / zhòng / de / fāng / shì / kāi / kěn / tǔ / dì

远古先民曾用刀耕火种的方式开垦土地。

Ancient peoples used slash-and-burn methods to clear land for farming.