未知的未来

unknown factors───未知因素

unknown factor───未知因素

unknown country───未知国家

uncertain future───前途未卜

unknown quantity───[数]未知量

unknown quantities───[数]未知量

economic future───经济未来

well-known figure───知名人物

energy future───能源未来

I'm working toward the slice of the unknown future step away, never stop.

Then we launch into the unknown future.

Indeed, they were no doubt very glad to have the reassurance of each other's presence for travelling into an unknown future.

From now on, the brave give oneself to the unknown future, which is of significance to travel.