Researchers have found a chemical from a tropical mint plant that works both as a sunless tanner and as a solar shield in fair-skinned mice.
研究人员从热带一种薄荷类植物中发现的化学物质对缺乏阳光照射的皮革以及实验室隔绝阳光的“白皮”鼠都有作用。
The absence of an oxygen atmosphere on Mars and other planets in our solar system means that these planets also lack an ozone shield that would protect surface-dwelling life from UV radiation.
在火星和我们太阳系的其他行星上没有氧气，这意味着这些行星也缺乏保护地表生物免受紫外线辐射的臭氧层。
When a CME hits, the solar particles can interact with Earth's magnetic field to produce powerful electromagnetic fluctuations. (Related: "Magnetic-Shield Cracks Found; Big solar Storms Expected.")
当一批日冕物质抛射来临，太阳粒子可与地球的磁场相互作用形成强有力的电磁波动。
The puny atmosphere on the planet is not strong enough to shield the planet against lethal solar radiation, though microbes could potentially exist beneath the surface.
火星稀薄的大气层不足以抵挡致命的太阳光辐射。但是地表之下，可能生活着微生物。
The ionosphere, an electromagnetic-wave conductor, 100 KMS above the earth, consists of a layer of electrically charged particles acting as a shield from solar winds.
电离层(一种电磁波导体，位于地球上方100公里处)由一层荷电粒子组成，作为一个抵当太阳风的樊篱。
The ionosphere, an electromagnetic-wave conductor, 100 KMS above the earth, consists of a layer of electrically charged particles acting as a shield from solar winds.
电离层(一种电磁波导体，位于地球上方100公里处)由一层荷电粒子组成，作为一个抵当太阳风的樊篱。
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