失败的恐惧，比其它因素更能让人踟蹰不前。

And stick-to-it-iveness. The fear of failure, more than anything else, holds people back.

当我们面对挑战时，我们没有怯懦、没有退缩，更没有踟蹰不前。

When we are faced with a challenge, we have no cowardice, no retreat, no hesitate to move forward.

有些人惧怕失败，他们承受不起失败的打击，因此，他们踟蹰不前，不思进取。

Some people are afraid of failure and they can not bear the blow of failure, so they stay where they are and try to not to mike progress.

即便警察更倾向于针对黑人男孩，警察和社会整体的种族主义倾向都比过去要小，然而历史在踟蹰不前。

Even if the police are more likely to pick on black boys, both the police and society as a whole are far less racist than in the past. Yet history lingers.

每当一场伟大的技术变革将要改变人类命运之时，对新技术的恐慌与不安会让脆弱的我们踟蹰不前。

Whenever a great technological innovation will change the lives of human beings, panic and agitation make us hesitate and not forge ahead.