累积层

Soil organic layer in forest can be defined as a layer of accumulated organic materials including freshly, fragmented and humified litters on the soil surface, which play a key role in the global carbon cycle.

森林土壤有机层是指累积在土壤表面未分解到完全分解的有机残余物质，在全球碳循环中具有十分重要的作用和地位。

Compared to other elements content in different parts of different genotypes of wheat grains, we can find that there was extremely remarkable linear relations between the content of Pb and Cd

植物受重金属的污染往往是多种重金属的复合污染[15]，通过比较不同基因型水稻籽粒同一部位和不同部位Cd含量的差异，发现对Pb、Cd积累的部位差异是一致的，均是糊粉层累积最多，内胚乳最少。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。