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

与应的固，大多数液的密度较低且可压缩性更高，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.

聚合刚石纳米棒，或超级刚石，更酷的是，这些是我们所知的最坚硬、密度最高，几乎无法压缩的材料。

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，属高科技震动和压力吸收的帮助很大，内部气让物质极度压缩，可吸收很多机械能，而且依然保留属的强度和耐用性。