这些探险很可能是受当地人口增长和政治局势的影响的，以及探索未知水域的带来挑战和刺激感。
These expeditions were likely driven by population growth and political dynamics on the home islands, as well as the challenge and excitement of exploring unknown waters.
先前的一些研究表明，参与心理刺激的活动来挑战你的大脑可能会有所帮助。
Some previous studies have suggested that challenging your brain with mentally stimulating activities might help.
每一个新发现都将引领你到另一个刺激的挑战中去。
Every new awareness will lead you to anotherstimulating challenge.
应用推荐