Most of the carbon is returned to near-surface waters when phytoplankton are eaten or decompose, but some falls into the ocean depths. Illustration adapted from a New Wave of ocean Science, u.
大部分的碳会在浮游植物被食用或者分解的时候返回到近地表水域，但仍有一部分被带进了大洋深处。
2
The longitudinal wave cannot exist near the surface of a solid, and those exist near it are gliding irrotational waves.
纵波不能在固体表面存在，在固体表面存在的是相应的滑行集散波。
3
Creeping wave is a type of compressional wave, which propagates below the surface and is sensitive to surface and near-surface defects.