美
[hɑːdnəs]
"the costs of reducing hardness depend on the relative amounts of calcium and magnesium compounds that are present"
"he assigned a series of problems of increasing hardness"
"the ruggedness of his exams caused half the class to fail"
"severity of character"
"the harshness of his punishment was inhuman"
"the rigors of boot camp"
以上内容独家创作，受著作权保护，侵权必究
海词词典，十七年品牌
