firmness
🇬🇧/ˈfɜːmnəs/ 🇺🇸/ˈfɜːrmnəs/
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20319
the quality of having a solid, almost unyielding surface or structure. "he tested the firmness of the mattress"
noun [抽象名词] 坚定；坚固；坚度
He was a man of intelligence and of firmness of will. 他是个聪明而又意志坚定的人。
