A search is now under way to confirm the suspected existence of particles of matter that move at a speed greater than light, and therefore, might serve as our passports to the past.
出自-2011年6月听力原文
英语六级真题
Later working together in London, they laid the foundations of modern physics by showing that normal laws of cause and effect do not apply at the level of subatomic particles.
出自-2013年12月听力原文
Finding the true nature of subatomic particles
出自-2013年12月听力原文
Particle physicists and astronomers collaborate often.
2019年6月六级真题（第二套）听力 Section C
柯林斯高阶英汉双解学习词典释义
N-COUNT
微粒；极小量
A particle of something is a very small piece or amount of it.