总磷上层土的增加量最显著，因此，棚膜覆盖和覆盖可作为农家堆肥施肥的推荐模式。
Therefore, plastic cover treatment and soil cover treatment can be used as household composting system recommendation model.
一周以后，当工人将最上层的表层土夯实以后，臭味就消失了。
A week later, no smell could be detected as the workers tamped down a final layer of topsoil.
Dill告诉我们，土的上层和底下的颜色是不同的，把上层的土挖掉，呈现出一条颜色相异的直线壕沟便于人们从上空发现你。
The top layer of soil is a different color. Scrape it away and make straight lines, which are easy to spot from above.
按照白胡子老人点示的办法，铁塔的上层建造，采取用土逐层屯积、在上面化铁浇铸的办法，十三层塔体很快便建成了。
According to the white-bearded old point that the way to the top of the tower construction, to take soil layers stocking in the top of cast iron approach, Thirteen Floor tower will be built soon.
我去找挖墓的人。土只是上层结冰。我想天黑前就可以挖好了。
I'll see about the gravediggers. Only the top layer of soil is frozen. I think it can be ready before dark.
我去找挖墓的人。土只是上层结冰。我想天黑前就可以挖好了。
I'll see about the gravediggers. Only the top layer of soil is frozen. I think it can be ready before dark.
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