1
the rationalisation of sth
数学术语，指去掉根号或使表达式更简洁；也泛指使某事显得合理的行为。
The rationalisation of the denominator is a standard algebraic technique.
分母的有理化是标准的代数技巧。
合理化
rationalisations — plural of rationalisation
先理解核心含义，再看它在真实句子里的用法。
合理化
the act or process of making something appear rational or reasonable
The rationalisation of the denominator is a standard algebraic technique.
分母的有理化是标准的代数技巧。
<主英>=rationalization
n (psychiatry) a defense mechanism by which your true motivation is concealed by explaining your actions and feelings in a way that is not threatening；n the cognitive process of making something seem consistent with or based on reason；n (mathematics) the simplification of an expression or equation by eliminating radicals without changing the value of the expression or the roots of the equation；n the organization of a business according to scientific principles of management in order to increase efficiency；n systematic organization; the act of organizing something according to a system or a rationale
She offered a rationalisation for arriving late, blaming the heavy traffic.
她为迟到找了个合理化的解释，怪交通太堵了。
His rationalisation of the team's failure did not convince the coach.
他对球队失败的合理化解释没有说服教练。
We should stop making rationalisations and face the real problem.
我们应该停止找各种合理化的借口，去面对真正的问题。
数学术语，指去掉根号或使表达式更简洁；也泛指使某事显得合理的行为。
The rationalisation of the denominator is a standard algebraic technique.
分母的有理化是标准的代数技巧。
常用于暗示对方的说法只是借口，而非真正的原因。
She used her busy schedule as a rationalisation for not visiting her parents.
她把自己繁忙的日程当作不看望父母的说辞。
Not this
We need to rationalisation the production process.
Use this
We need to rationalise the production process.
rationalisation 是名词，不能作谓语动词。在 need to 之后应接动词原形，因此改为 rationalise。
Not this
He gave a rationalisation on his actions.
Use this
He gave a rationalisation for his actions.
表示“为……辩解/找理由”时，rationalisation 后应用介词 for。汉语“关于”容易误译为 on，但英语中不能用 on。
Not this
The rationalisation of his argument is doubtful.
Use this
The rationality of his argument is doubtful.
表示“合理性”这一属性时应用 rationality；rationalisation 指“合理化过程”或“文饰作用”，不能评价一个论点是否理性。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
分母有理化
The lesson covered the rationalisation of the denominator.
这节课讲了分母有理化。
为某人的行为找的辩解（文饰）
His explanation was just a rationalisation for his behaviour.
他的解释只不过是为自己的行为找的辩解（文饰）。
对决定的合理化（使之显得合理）
The rationalisation of a decision does not change its emotional origin.
对决定的合理化并不会改变它的情感根源。
Use rationalisations naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：rational（理性）＋-isation，想象给每个行动“配给”(ration)一份理性，即给不合理行为找合理借口。
语域：formal 常见场景：psychology、mathematics、academic writing 该词为较正式的英式拼写（美式拼写为 rationalization），多用于学术或专业书面语境，例如心理学中的“文饰作用”、数学中的“有理化”等；日常口语中较少见。
英式拼写；美式拼写为 rationalization。
Dictionary facts from ECDICT, WIKTIONARY.