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Small seasonal rivers formed beds of natural clays and dried mud .

一些季节性小河流留下了有自然粘土的河床。

The anasazi culture were also skilled at forming the natural clays into pottery .

阿纳萨奇人还擅长于用粘土制作陶器。

Their lipsticks were a paste made with red iron oxide and ochre clays or olive oil with beeswax .

她们的唇膏是用氧化铁和赭色的黏土做成的糊状物，或者是在橄榄油中拌入蜂蜡而成的。

Red clays in the region are rich in " heavy " rare earths , the most valuable and scarce elements .

该地区的红粘土中富含“重”稀土元素，这些化学元素价值最高也最稀缺。

They were basketloads of different clays that people had dumped there to build this fill .

他们是那些修这一层的人们倒在这里的一篮一篮不同的粘土。