But even mulch has its limits. Natural resource specialists point out that weeds can be transported in mulch. This is also true of soil, grain, hay and animals.
但是，地膜也有其局限性。自然资源专家指出，杂草可以在地膜里传播，还可以通过土壤，谷物，干草和动物传播。
In dredging Engineering, The underwater soil, cut and mixed with water, is usually sucked and transported to disposal area by a centrifugal slurry pumps.
在疏浚工程中，水下被挖掘的土质与水混合后，通常依靠离心泥泵抽吸并输送至排泥场。
Atrazine has a good solubility in soil, so it easily migrates to deep layer or transported to the surface water or groundwater by the river.
阿特拉津具有土壤淋溶性，易被雨水、灌溉水等淋溶至较深层土，或是随地表径流进入地表水和地下水中。
The results of the experiment shown that the F in tea plants taken up from the soil was mainly transported to the leaves and its content accounted for about 90% of the whole tree.
结果表明，茶树从土壤中吸收的氟，主要向叶片运输，根、茎部基本不积累氟，溶液培养试验也得到了同样的结果。
The results of the experiment shown that the F in tea plants taken up from the soil was mainly transported to the leaves and its content accounted for about 90% of the whole tree.
结果表明，茶树从土壤中吸收的氟，主要向叶片运输，根、茎部基本不积累氟，溶液培养试验也得到了同样的结果。
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