Planets are believed to emerge from the accretion of particles in a disk of gas and dust as they whirl around the star.

行星被认为是由围绕恒星旋转的气体和尘埃组成的圆盘中的粒子累积而成。

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Wherever these particles settled, they formed a pan, a layer that water couldn't penetrate.

不管这些粒子沉降在哪里，它们会形成一个平面板块，一层水无法渗透的平面。

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Nanocrystals, also known as quantum dots, are semiconducting particles with a diameter of a few millionths of a millimeter.

纳米晶体，也被称为量子点，是一种直径只有百万分之一毫米的半导体粒子。

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He says these particles would offer a more exact method of transporting the short-lived drug, called B-H-three mimetic.

VOA: special.2010.03.16

Everything -- gold, silver, diamonds, particles -- everything accelerates the same way in a gravitational field, due to this remarkable fact.

所有东西,金,银,钻石,粒子,所有东西,在引力场作用下都以相同的方式加速,原因就是这个显著的事实

耶鲁公开课 - 基础物理课程节选

It has to be part of a theory, and then trying to adjust it so it can be incorporated, you discover anti-particles.

要想使理论合理,然后试着去调整,使之和实际相符,结果就找到了反粒子

耶鲁公开课 - 基础物理课程节选

In 1993 Lansbury showed that when he put a smidgen of beta-amyloid-42 into a mixed solution of free-floating amyloid particles, it immediately caused them to coalesce into clumps.

FORBES: Magazine Article

Also, scientists at the Hong Kong Polytechnic University have been able to build a nano-thin layer of particles of titanium dioxide, a substance that reacts with sunlight to break down dirt and other organic material.

FORBES: Nanotechnology's Disruptive Future

The loop may produce sub-atomic particles with a thousand times more energy than those in man-made accelerators.

BBC: Arches Cluster, Leicester