名词
中文翻译：初级宇宙射线
同义词：
['初级粒子，初级粒子流例句：1. The primary cosmic rays are the first rays of light that reach the Earth from the sun.（初级宇宙射线是太阳到达地球的首批光线。）']
例句：
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1. The primary cosmic rays are the first rays of light that reach the Earth from the sun.
初级宇宙射线是太阳到达地球的首批光线。
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2. The study of primary cosmic rays has led to many important discoveries in particle physics.
对初级宇宙射线的研究在粒子物理学中导致了许多重要的发现。
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3.The primary cosmic rays are believed to be responsible for the formation of stars and planets.
初级宇宙射线被认为是形成恒星和行星的原因。