C 小品词 any of a number of usually short words that are not as important in a sentence as the subject, verb, etc.
词汇搭配
动词+～
emit a particle 射出一颗粒子
形容词+～
charged〔elementary〕 particles 带电〔基本〕的粒子
minute particle 微小颗粒
solid particles 固体颗粒
句型例句
Alpha-rays consist of alpha particles.α射线是由α粒子构成的。
There are particles of dust in the air.空气中有尘粒。
There's not a particle of truth in her story.她讲的没有一句实话。
Prepositions and conjunctions are particles.介词和连词是小品词。
