... topsoil cover 表土保护层 urban topsoil 城市表层土壤 8. dilute adj. 稀释的；淡的 ...
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Environmental Magnetic measurements were carried out on all urban dust, topsoil and dust storm samples.
对尘土、不同深度的表土和沙尘暴样品开展了系统的环境磁学参数测量。
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Besides pressure- hosing urban areas, this would involve removing about 5cm of topsoil from local farms as well as all the dead leaves in caesium-laden forests.
ECONOMIST: The mounting human costs of Japan��s nuclear disaster
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