Yóu / yú / huán / jìng / biàn / huà / zhè / gè / bù / luò / bù / dé / bù / zhú / jiàn / yí / xǐ / dào / xīn / de / dì / fāng

由于环境变化，这个部落不得不逐渐移徙到新的地方。

Because of environmental changes, the tribe had to gradually migrate to a new place.