perilous

a. 危险的

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。

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。