Most liquids are less dense and more compressible than their corresponding solids, but only slightly so.

与相应固体相比，大多数液体密度较低且可压缩性高，但仅略微如此。

Aggregated diamond nanorods, or hyperdiamonds, if you wanna sound cool, these are the hardest, most dense, and least compressible material we know of.

聚合刚石纳，超级刚石，是，这些是我们所知最坚硬、密度最高，几乎无法压缩材料。

In general, metal foams are useful for high-tech shock and impact absorbers, the gas inside makes them extremely compressible, so they can absorb a lot of mechanical energy, while still retaining some of the strength and durability of a metal.

总之，属泡沫对高科技震动和压力吸收帮助很大，内部气体让物质极度压缩，可吸收很多机械能，而且依然保留属强度和耐用性。