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腐殖质
humus
常考释义
These materials ultimately get transformed into a new material called humus.
这些材料最终会被转化成一种新的叫做腐殖质的物质。
来源于：听力OFFICIAL37 L1n. 腐殖质【生】
Some of those carbon products transfer from the roots to symbiotic fungi and soil microbes, which store the carbon in the soil as humus.
这些含碳化合物有部分从根部被共生真菌和土壤中的微生物摄取，最后变成腐殖质储存在土壤里。
These materials ultimately get transformed into a new material called humus.
这些材料最终会被转化成一种新的叫做腐殖质的物质。
来源于：听力OFFICIAL37 L2And when humus is combined with the clay minerals in soil, that's what gives soil its dark brown color.
And when humus is combined with the clay minerals in soil, that's what gives soil its dark brown color.
来源于：听力OFFICIAL37 L2So now, if we've got clay and humus, these transformed materials, and we mix them together, we've got something very close to soil.
So now, if we've got clay and humus, these transformed materials, and we mix them together, we've got something very close to soil.
来源于：听力OFFICIAL37 L2Others decompose organic litter (debris) to form humus (nutrient-rich organic matter).
其他的细菌则可以分解有机垃圾（残骸）来形成腐殖质（富含营养的有机物质）。
来源于：阅读OFFICIAL36 P1Once the humus layer disappears, nutrients cannot be recycled and leach from the soil, converting soil from fertile to infertile and making it suitable only for savanna vegetation.
一旦腐殖质层消失了，营养物质便不能循环并渗入土壤中了，土壤由肥沃变得贫瘠，这就使它只适合热带草原植被的生长了。
来源于：阅读OFFICIAL31 P3humous
unicellular adj. 单细胞的
uni一个+cellul细胞+ar...的 = 单细胞的
drone n. 雄蜂
perennial adj.常年的；终年的
per贯穿,自始至终;全部+enn年+ial的 = 贯穿一年的→全年的
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