他们虽然已经筋疲力尽，但还是鼓起勇气前进，随时盼望突然遇到一个转角，使他们能回到原地去。

The castaways, although their strength was nearly exhausted, still marched courageously forward, hoping every moment to meet with a sudden angle which would set them in the first direction.

youdao

我要求你们鼓起勇气去艰苦前进，穿过这个局限性的障碍物，回忆起我们全体是谁，去活在你们自己个人的完整性内。

I am asking you to have to courage to plow thought this barrier of limitation and remember the totality of who you are, to live in your own personal integrity.

youdao

实在说，叙述数学家如何跌跤，如何在迷雾中摸索前进，应能使搞研究工作的任一新手鼓起勇气。

Indeed the account of how mathematicians stumbled, groped their way through obscurities, should give heart to any tyro in research.

youdao