Stars like our sun fuse hydrogen in their cores into helium. White dwarfs are stars that have burned up all of the hydrogen they once used as nuclear fuel.
太阳一类的恒星在其核心将氢融合成氦。而白矮星则是将其曾用作核燃料的所有氢原子都燃烧殆尽的恒星。
Unlike the Chinese test, though, the American target was in such a low orbit that any debris would quickly have fallen into the air and burned up.
然而有别于中国实验的是美国的目标卫星的飞行轨道较低，从而所产生的残骸会在落入大气层后迅速燃烧。
Rather, it looks as though the remains of burned plants have been mixed into it deliberately.
而是好像故意将烧焦植物的残留物掺入土壤中。
Despite being burned by two bubbles in the past decade, investors have eagerly jumped into risky assets recently.
尽管过去10年来遭受了两次泡沫的打击，投资者最近仍急切地跳进高风险资产。
By then all the stars will have burned out and the protons and neutrons in them will probably have decayed into light particles and radiation.
到那时候所有的恒星都会烧尽，而在其中的质子和中子可能会衰变成轻粒子和辐射。
I could have killed it for ever, sent it back into its tomb, destroyed its record, burned the one witness against me.
我本可以把它杀死，送进坟墓里，毁掉蛛丝马迹，把那份证据烧成灰烬。
The valves seat so briefly or poorly that normal heat transfer into the cooling system does not have time to take place, causing burned valves and low power.
气门磨合到位不亮或太短暂，以致来不及向冷却系统进行正常的热转移，造成气门烧坏和输出动力降低。
The valves seat so briefly or poorly that normal heat transfer into the cooling system does not have time to take place, causing burned valves and low power.
气门磨合到位不亮或太短暂，以致来不及向冷却系统进行正常的热转移，造成气门烧坏和输出动力降低。
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