What is the significance of diriment impediments?

无效的阻碍有什么意思？

I'm trying to remove as many impediments to that as possible.

我试着尽可能移掉障碍。

When class begins, there are then impediments to meaningful research.

开始上课时，也还是会有进行有意义的研究的阻碍。

Management stays out of the way and helps them overcome obstacles and impediments.

管理人员不会干预他们，并帮助他们克服困难和障碍。

Challenge: Velocity gives the team a bar by which to gauge efforts to remove impediments.

挑战：速度可以充分调动团队的积极性以移除障碍。