fix·i·ty
noun/ˈfɪksəti/
/ˈfɪksəti/
[uncountable] (formal)- the quality of being permanent and not changing
固定性；稳定性 - He has great fixity of purpose.
他的目标非常坚定。 - the fixity of exchange rates
汇率的固定性
Word Originmid 17th cent. (denoting the property of a substance of not evaporating or losing weight when heated): partly from obsolete fix ‘fixed’, partly from French fixité. - He has great fixity of purpose.