Instead of transporting heavy soil into space, the roots of the plant are sprayed with a water-nutrient solution.

不是将沉重的土壤运送到太空，而是向植物的根部喷洒水-营养液。

Clay clay is the type of heavy, wet soil used to make pots. He made a bowl out of the clay.

粘土是一种重而湿的泥土 用来做罐子 他用粘土做了一个碗。