particle

柯林斯詞典

1. N-COUNT A particle of something is a very small piece or amount of it. 微粒; 極小量
...a particle of hot metal. …熱金屬微粒。
There is a particle of truth in his statement. 在他的聲明中衹有極少的事實。
2. N-COUNT In physics, a particle is a piece of matter smaller than an atom such as an electron or a proton. 粒子[技術(shù)]
...the sub-atomic particles that make up matter. …搆成物質(zhì)的次原子微粒。