蓝宝石 zhēnkōng
-
zhēnkōng
noun
a vacuum
Domain: Modern Chinese 现代汉语 , Subdomain: Physics
Notes: -
lánbǎoshí
noun
a sapphire
Domain: Modern Chinese 现代汉语 , Subdomain: Geology , Concept: Gemstone 宝石
Notes: (CC-CEDICT '藍寶石'; Guoyu '藍寶石')