险恶的本性
perilous journey───危险的旅程
by its nature───其性质
curious mixture───奇怪的混合物
from nature───从大自然
gentle nature───性情温和
glorious future───辉煌的未来；锦绣前程
ill nature───n.心地不良；恶意；坏脾气；性情乖僻
perilousness───冒险；危险；艰险
populous nation───人口大国
It is true during their explorations they often faced difficulties and dangers of the most perilous nature,...───的确，在探险中，他们经常面临着各种最有冒险性的艰难和险阻。
It is true that during our explorations we often faced difficulties and dangers of the most perilous nature.───确实，我们在探险的过程中，常常遇到最惊心动魄的困难和危险。
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。
It is true that during their explorations they often faced difficulties and dangers of the most perilous nature.───确实，在探险中他们经常遇到惊心动魄的困难和危险，
- perilous perch
- perilous nature