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Use "ochres" in a sentence
"Especially do these changes take place when the iron oxides are not associated with an earthy base; when, in fact, the so-called ochres cannot be classed as such."
"The boat was then painted. the pigments for this purpose were obtained from various substances found in the ground, such as ochres and other similar earths, and they were mixed with oils obtained from animals."
"Like Guston's infinite shades of pink, Roman ochres can be pale or saturated, constantly changing in the brilliant light and over time."