Yes, so they burnt off the calories and that means they lost weight.

没错，所以他们燃烧掉了卡路里，也就是他们的体重减轻了。

Experts say most of the eight-ton craft would have burnt off in its rapid descent.

专家称这个八吨重的航天器多数部件将在快速下降的过程中烧蚀销毁。

I've burnt my hair off so many times.

我已经烧掉我的头发很多次了。