That's because they rarely interact with solid matter.

这是因为它们极少与固态物质互动。

It's critical that geologists are knowledgeable about more than rocks and the structure of solid matter.

地质学家不仅仅要岩石和固体结构的知识，这很重要。

What is left is more like a vibrational frequency than particles of solid matter, more like a musical note.

剩下的更像是一种振动频率， 而不是固体物质的粒子，更像是一个音符。

And researchers found that P waves travel through both liquids and solids, while S waves travel only through solid matter.

同时研究人员发现P波能穿行液体和固体两种，而s波只能穿行固体物质。

Even with a small quantity of solid or liquid matter finding its way into the air passages, breathing could be seriously blocked.

即使少量的固体或液体物质进入空气通道，呼吸也可能严重受阻。

Even seemingly solid matter, including your physical body, is nearly 100 percent empty space — so vast are the distances between the atoms compared to their size.

即使是看似固体的物质， 包括你的身体，也几乎是 100% 的空虚空间——原子之间的距离与它们的大小相比是如此之大。

Quite different from Lake Asphaltite,whose depression is twelve hundred feet below the sea, it contains considerable salt,and one quarter of the weight of its water is solid matter, its specific weight being 1,170,and,after being distilled,1,000.

那个亚洲西部的死海低于海面一千二百英尺。大咸湖的水含盐成分很大，固体的盐质占湖水的总重量四分之一。水和盐的合重是一千一百七十，其中水的重量是一千。