| 单词 | black opal |
| 释义 | black opal (once / 347627 pages) n WORD FAMILY black opal: black opals USAGE EXAMPLESBlack opal is found in nodules, or seams, 30 to 100 feet underground, in layers beneath sandstone and clay. New York Times(Jul 05, 2016) One alpaca that she used to have, Black Opal, would come up and hug Sheri each and every time the alpaca lost a pregnancy. Washington Times(Oct 03, 2015) Athwart the front of the headquarters building lay an unbroken space, which the moonlight dyed with the deep blue-green radiance of a black opal. Buck, Charles Neville, The Code of the Mountains(2012) n a dark colored opal with internal reflections of green or red Hyper opal a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones |
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