a particle of hot metal.

热金属微粒。

There is a particle of truth in his statement.

在他的声明中只有极少的事实。

food particles.

食物微粒。

the sub-atomic particles that make up matter.

构成物质的次原子微粒。

Fewer cosmic rays reach the Earth when the Sun is very active, because the charged particles from the Sun deflect them.

当太阳非常活跃时，就只有较少宇宙射线抵达地球，因为太阳的带电粒子使其转变了方向。

Molecules, atoms and even elementary particles all fall to bits at high temperatures.

分子、原子，甚至基础粒子都会在高温下粉碎。