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1·An estimated 99.85 percent of the mass of our solar system is contained within the Sun, while the planets collectively make up most of the remaining 0.15 percent.

太阳占据了太阳系总质量的大约99.85%，而在剩余的0.15%中，行星占据了大部分。

2·Together with the kilogram, initially the mass of a decaliter of distilled water, it formed the basis of the metric system.

它和千克（10升蒸馏水的重量）一起构成了公制计量的基本单位。

3·For those countries which depend heavily on electric energy that is imported or produced from oil, mass use of electric vehicles is not necessarily advantageous for the system as a whole.

对于那些严重依赖于进口电能或是由石油转化成的电能的国家，大量使用电动汽车对整个系统来说是没有好处的。

4·He believes the cause is in the faltering education system and the sway of the mass media, he added.

他还说，他认为原因在于日益衰落的教育体制，以及大众传媒的影响。

5·Although the stars are still among the heaviest known, the mass limit has not been broken due to the multiplicity of the system.

虽然它们仍然是已知最重的恒星，但是在这个多星系统内，恒星的质量上限就不会被突破了。

6·This nebula is also home to the most massive star ever to be? Weighed? So far. This behemoth, part of a binary system called A1, is estimated to be roughly 116 times the mass of the sun.

这片星云也是多数大质量恒星的家园，目前仅有的被“称出重量”的恒星就在这一区域，这颗巨大的恒星是一个被称为A1的双星系统的一部分，它的质量大约为太阳的116倍。

7·As outlined in that report, the most severe threat facing any transportation system is a weapon of mass destruction such as a nuclear device or a biological weapon.

正如报告所概括的，所有交通系统面临的最严重威胁，是大规模毁灭性武器，例如核设备或生物武器。

8·You just need a few macroscopic variables that are very familiar to you, like the pressure, the temperature, the volume, the number of moles of each component, the mass of the system.

你只需要某些你非常熟悉的宏观变量，比如压强，温度，体积，每个组分的摩尔数，系统的质量。

9·They say they have strong evidence for another planet in the same system that has about eight times the mass of the Earth and orbits every 84 days.

他们说他们有足够证据证明在同样系统内还有一个行星，体积为地球的8倍，运转周期为84天。

10·TEWKSBURY, Mass. | The U. S. Navy has awarded Raytheon Company (NYSE: RTN) two contracts that extend the company's legacy of performance and support for the Aegis weapons system.

美国海军已授予雷神公司两项合同，以提高宙斯盾雷达系统性能并为宙斯盾武器系统提供支持。