1. Despite the dangers, the dauntless firefighter rushed into the burning building to save lives.
尽管存在危险，无畏的消防员冲进着火的建筑物中拯救生命。
2. She faced the challenges with a dauntless spirit, never backing down from any obstacle.
她以无畏的精神迎接挑战，从不退却面对任何障碍。