perilous

形容词 perilous:

1. fraught with danger
   同义词：parlous, precarious, touch-and-go

1. It is true during their explorations they often faced difficulties and dangers of the most perilous nature.
   确实在探险中，他们经常面临着各种最有危险性的艰难和险阻。
2. Their perilous journey across the ocean has attracted public attention.
   他们的越洋冒险旅行引起了公众的注意。