2.Explorers have to withstand hardships.
3.It fared well with the explorers.
4.Traders came in the wake of the explorers.
5.The explorers were young and hearty.
6.The explorers had to undergo much suffering.
7.International Sun-Earth Explorer
8.The explorer related his adventures
9.He is brave and fearless, and he has the makings of an explorer.
10.The explorer set up a base at the foot of the mountain.