a very hard, granular, crystalline, igneous rock consisting mainly of quartz, mica, and feldspar and often used as a building stone
花岗岩,花岗石。
used in similes and metaphors to refer to something very hard and impenetrable
[用于明喻和暗喻]坚硬的;难以穿透的
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[as modifier]
a man with granite determination .有着花岗岩般坚定决心的男子。
"mid 17th cent.: from Italian