The fire burnt up suddenly.

火突然烧起来了。

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We burnt up all the garden rubbish.

我们将花园中的垃圾全部烧掉了。

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You konw, the earth is gonna be burnt up by the sun one of these thousands of years.

在未来几千年中的某一年,地球会被太阳燃成灰烬。

麻省理工公开课 - 电影哲学课程节选

Most of the 20-year-old satellite should simply have burnt up on re-entry into the Earth's atmosphere, but modelling work indicated perhaps 500kg could have survived to the surface.

BBC: Nasa's UARS satellite falls off west coast of US

Before people started making such a mess, the number of dust particles orbiting earth was tiny, since they would have been dragged quickly into the atmosphere by friction and burnt up.

ECONOMIST: Orbital debris

In this area, you can see the drought has left dried eucalyptus leaves and even dead ferns that just burnt up as tinder and let the whole forest catch fire very quickly.

NPR: In Portugal Another Season of Forest Fires