gemologists
美
英 
例句
Generally, gemologists refer to specific gravity, or relative density -- the ratio of the density of a gemstone relative to that of water.
一般來說,寶石指比重,或相對密度-寶石的密度相對于水的密度。
A gem of a discovery indeed, but one that is unlikely to excite gemologists as much as astronomers.
的確是發現了一顆寶石,但是寶石學家似乎不像天文學家那么對此感到興奮。