zài / rè dài / yǔ lín / yī xiē / bù luò / zhì jīn / réng / bǎo liú / zhe / dāo gēng huǒ zhòng / de / gēng zuò / xí guàn在热带雨林,一些部落至今仍保留着刀耕火种的耕作习惯。In tropical rainforests, some tribes still retain the farming practice of slash-and-burn.