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hardness 'hɑ:dnis

TOEFL

释义

n. 坚硬, 困难, 严厉, 勇气
[化] 硬度

英文释义

n. the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale
n. a quality of water that contains dissolved mineral salts that prevent soap from lathering
n. the quality of being difficult to do

词形变化

复数: hardnesses

BNC词频排名: 12,304 | 当代语料库词频排名: 17,667