1. Particles of dirt settled on the tablecloth.
    尘埃落在台布上。

2. He is studying the properties of these particles.
    他在研究这些粒子的性质。

3. There is not a particle of truth in his report.
    他的报告没有一点真实性。

1. 质点：如同研究其他事物一样,研究机械运动先要描述机械运动,这一章描述的就是可以被看作质点(particle)的那些物体的机械运动,也就是说,质点运动学(particle kinematics)中的所有概念和方法都是为了描述质点的运动而引入的,实践证明,

2. 颗粒：造成污染的原因:农药、杀虫剂使用的残余(residue)及颗粒(particle)对人类的危害规律:室内:调小音量(turn down) 宿舍隔音(sound proof) 意识到噪音没有(didn't realize)

3. 微粒：边缘抛光的主要目的在于降低微粒(particle)附着于晶圆的可能性,并使晶圆具备较佳的机械强度,但需要的设备昂贵且技术层面较高,除非各户要求,否则不进行本制程.

1. 微粒；极小量
    A particle of something is a very small piece or amount of it.

    e.g. ...a particle of hot metal...
           热金属微粒
    e.g. There is a particle of truth in his statement.
           他的陈述中有一点点实话。

2. 粒子
    In physics, a particle is a piece of matter smaller than an atom, for example an electron or a proton.

3. （语法中的）小品词
    In grammar, a particle is a preposition such as ''into'' or an adverb such as ''out'' which can combine with a verb to form a phrasal verb.

1. a function word that can be used in English to form phrasal verbs

2. a body having finite mass and internal structure but negligible dimensions

    Synonym: subatomic particle

3. (nontechnical usage) a tiny piece of anything

    Synonym: atommoleculecorpusclemotespeck