onyx
n. [矿物] 缟玛瑙;[动] 爪甲
例句
There are five options for the gemstone: blue topaz, opalite, onyx, sapphire and ruby.
有五种宝石供选择,分别是蓝色托帕石、不纯蛋白石、缟玛瑙、蓝宝石和红宝石。
In the fourth row a chrysolite, an onyx and a jasper.
第四行是水苍玉,红玛瑙,碧玉。
In front of the temple was a pool of clear water paved with veined onyx.
庙宇前是用条纹玛瑙砌的净水潭。