The second stage, however, failed to complete its burn period and, as a result, fell quite short of where the North Koreans had anticipated that it would land.

不过，第二级发射没有完成燃烧过程，导致火箭落在离预定地点很远的地方。

youdao

So once the pebble is depleted a fresh pebble can be put it in or it can be re-circulated back in the reactor if its burn-up isn't all used up or the fuel isn't all used up.

所以，一旦球体被分离了，新的球体能够,放进去或者它能够在计算回反应堆里,如果它燃烧完了，但没有用完，或者燃料,没有全部用完。

youdao

And at this altitude ferocious winds require a SkySat to burn through its fuel supply just to stay still.

在这个海拔高度猛烈的大风需要一个天星通过燃烧它的燃料提供动力保持飞船静止不动。

youdao

The Salem Fire Corporation showed up with its trucks and watched the house burn, just making sure that it didn't spread.

塞伦消防公司迅速开着消防车来到现场,眼睁睁看着房子烧掉，只是确保它不会蔓延。

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The company cut its burn rate by 60%, Marino says and has 165 employees, down from 225 previously.

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Its burn rate is minimal.

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The EU has been held back by Poland, which insists on its right to burn its huge reserves of coal.

BBC: Science & Environment