“底土”造句

蚯蚓深深地钻进底土.
Earthworms burrow deep into the subsoil.

进入底土的化学物质会减少，这对土质松软的热带土壤而言尤为重要。
Less chemical gets into the sub-soil which is particularly important with the light, tropical soils.

土壤中含有效锌转低时, 深层耕翻会使缺锌的底土暴露出来.
In a solid which is moderately low in available zinc, deep cuts may expose zinc - deficient subsoils.

• #底土