Since white dwarves have no fuel left for fusion, they grow cooler and cooler over billions of years to become black dwarves too faint to detect.
随着白矮星变得没有剩余的燃料用于聚变，它们会在之后的几十亿年中越来越冷，而成为难以被探测到的黑矮星。
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。
White dwarfs are stars that have burned up all of the hydrogen they once used as nuclear fuel.
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。
Small white pieces of debris, material that could be metallic and signs of oil and kerosene, which is used as jet fuel, were also seen.
可以看到小块白色碎片、金属材料，还有被用作飞机燃料的石油和煤油。
With its nuclear fuel exhausted, this brief, spectacular, closing phase of a sun-like star's life occurs as its outer layers are ejected and its core becomes a cooling, fading White Dwarf.
随着其核燃料的用尽，这个短暂的、壮观的、像太阳一样恒星的临近结束阶段而发生变化，因为它的外层喷发，而内核变成一个逐渐冷却、逐渐褪色的白矮星过程。
And the White House reckons average fuel efficiency is currently a measly 25mpg.
白宫估算燃油的效率现在是25英里每加仑。
Bathed in xenon spotlights, the white spaceship, attached to its twin solid rocket boosters and orange external fuel tank, crept 3.4 miles on the back of an enormous tractor called the Crawler.
沐浴着氙气聚光灯光，白色的飞船，带着一对固体火箭推进器和橙色外挂燃料箱，在称为“爬行者”的巨大拖拉机上缓慢行驶了3.4英里。
On election day, he fled the state for the more flattering photo opportunity of joining Barack Obama in the White House Rose Garden to announce tighter national fuel-efficiency standards for cars.
在选举当天，他离开加州，到白宫的玫瑰花园同巴拉克奥巴马一起宣布更严格的全国能源使用效率标准，只为了一个更讨人喜欢的上镜机会。
The third part, through describing and analyzing the two concrete cases: "Abundant use of the fuel" and "The white polluting", put the basic theory in the practical situation to accepting examination.
第三部分，通过对“燃料的充分利用”与“白色污染”这两个具体案例的描述及分析，将这一基本理念放到实际情境中以接受检验。
TI Automotive, which makes fuel tanks, has laid off a quarter of its white-collar staff in North America in the past year.
生产油料罐的TI汽车公司已经在去年裁掉了北美1/3的白领员工。
India, too, may have found the engine that could fuel its takeoff and transform its economy: providing white-collar services that are outsourced by companies in the rest of the world.
印度也不例外，为白领阶层提供由世界其他国家外包的服务成为支撑经济起飞和转变经济增长方式的引擎。
The White House said that would save $133 million a year, through a transit fee waiver, shorter flying times and fuel savings.
白宫表示这（该协议）将为美国省下每年1.33 亿美元的开支，因为该协议免去了运输年费，缩短了飞行时间，并节省了燃料。
White dwarfs are small, dense remnants of normal stars that have expended their fuel.
白矮星是普通恒星燃尽后形成的体积很小，质量密集的残骸。
White dwarfs are small, dense remnants of normal stars that have expended their fuel.
白矮星是普通恒星燃尽后形成的体积很小，质量密集的残骸。
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