In a selfless act of scientific bravery, they strode confidently in front of it as it rode towards them at a brisk walking pace, only to see it stop in its tracks and reverse.

出于科研勇气，当机器人轻快的驶向他们的时候，他们自信的在它面前走动，结果机器人停了下来掉过头去。

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Francis felt he would like to stop this conversation in its tracks.

弗朗西斯觉得他想中断这次谈话。

《柯林斯英汉双解大词典》

Alternatively, removing fuel from the fire—by chopping down trees, digging fire breaks and setting control burns ahead of it— also helps stop a fire in its tracks.

还有一种阻止火势蔓延的办法是移除火中的燃料——可以把树砍掉、挖隔火设施也可以提前进行控制性火烧。

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The researchers were able to make every droplet of oil or water placed on the material to run or stop in its tracks (a response which the team describes as "pinning"), simply by flexing the material or letting it relax.

BBC: New material can halt runny liquids on demand

Why, of all the doctors in the world, did it fall upon him to finally stop polio in its tracks?

CNN: Commentary: Heroes in lab coats

And that, with the Union expanding to the east, would stop progress in its tracks.

ECONOMIST: Euro-apartheid?