英语词汇“opal dirt”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	opal dirt
释义	opal dirt noun [mass noun] Australian The type of soil in which opals are found: mechanization means the opal dirt can be removed in bulk... Down the slope towards Lightning Ridge, the depth to opal dirt was 65 feet. The opal dirt is much harder than on the rest of the field. The mine is lighted by electricity and a power plant inside takes opal dirt back to the surface.
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