이 문장들을 어떻게 문법적으로 해석해야 하는 건가요~?

The Tuareg people of Africa led the life of nomads, people with no permenent home.

They were known for their skill in finding way across the desert, with only the stars to guide them.

부대상황도 아니고 도대체 무슨 용법인지 알려주세용~^^