grinding down

But MND is relentless in its grinding down of both patients and those close to them, and it's a shock from which it is not easy to recover.

但是MND无情的折磨着患者的同时，也使他们身边的人痛苦不堪，尤其打击人的是它是很难康复的。

and then there are times when you want to be the person that's, you know, got his heel on their necks and you're grinding down. So. . .

然后有些时候你要成为一个，你知道，把脚踩在别人脖子上并用力踩的人。那么…

A simple grinding down of rocks from erosion could produce a red mineral that stains the dust on Mars, the new thinking goes.

仅仅是遭受侵蚀的岩石经磨损产生了一种红色的矿物而将火星上的尘埃进行了着色，这就是新的理论解释。

On at least three occasions , the second after grinding down to the sawdust powder retained .

至少三次，第二次以后打磨下来的木屑粉要保留下来。

Another benefit? If you're working among others who are grinding down on their work, chances are you will too.

另外还有个好处是，如果你和一群埋头苦干的人在一起工作，你可能也会这样。

Streamers of dust - fine sediments produced by glaciers grinding down the mountains - are blown out over the Gulf of Alaska

吹过阿拉斯加湾的尘土带——这是冰川碾磨底部山脉形成的细颗粒泥沙。