humus
核心词议：

速记方法
速记技巧 词源词根法 来自拉丁语humus，泥土，土壤，词源同exhume，humble，来自PIE*dhghem，泥土，词源同chthonic，chameleon，chamomile.可能来自PIE*dhegh，燃烧，词源同day，fever.词义演变参照area.

知识扩展


中文词源： humus 腐殖质 来自拉丁语humus,泥土，土壤，词源同exhume,humble,来自PIE*dhghem,泥土，词源同chthonic,chameleon,chamomile.可能来自PIE*dhegh,燃烧，词源同day,fever.词义演变参照area. humus
精选例句

常见考点例句：

Wind and spring floods erode soils , exposing underlying layers and premiering new compositions of humus and minerals on the surface .

风沙和水灾侵蚀着土壤，暴露出地下土层，腐殖质新成分及其表面的矿物。

Soil microorganism plays an important role in the process of nutrient transformation and humus forming in soil .

土壤微生物在土壤养分转化与腐殖质形成过程中有著重要的作用。

Soil which contains a lot of humus is more fertile than that which only has a little .

富含腐殖质的土壤比只含有少量腐殖质的土壤要肥沃多了。

So the topsoil is bits of rock mixed with things that are once alive . These things in the topsoil that were once alive are called humus .

可见，土壤是石粒和曾经是活体的物质的混合物。表土中这种曾是活体的东西叫做“腐殖质”。

Plants grow in soil which has a dark colour . This dark soil is humus .

植物生长在黑色的土壤里，这种黑色土壤叫腐殖上。