n.(用途、功能、尺寸、价值等)相等，对等，相同

There is a qualitative equivalence.
质量上是对等的。
They are in moral equivalence.
他们在道德层面是对等的。
They are the equivalence relation.
他们是等量关系。
The concept of equivalence in mathematics refers to the state where two expressions or equations have the same value.
**中文释义**：数学中的等价概念指的是两个表达式或方程具有相同值的状态。
In linguistics, a translation is considered equivalent when it conveys the same meaning in the target language as the source text.
**中文释义**：在语言学中，当翻译在目标语言中传达与源文本相同的含义时，它被认为是等价的。
The principle of equivalent exchange in alchemy suggests that to gain something, something of equal value must be lost.
**中文释义**：炼金术中的等价交换原则表明，要获得某物，必须失去同等价值的另一物。
The theory of relativity establishes an equivalence between mass and energy, famously summarized by E=mc².
**中文释义**：相对论确立了质量和能量之间的等价关系，最著名的总结就是E=mc²。
In psychology, emotional intelligence is often seen as equivalent to social intelligence, both emphasizing interpersonal skills.
**中文释义**：在心理学中，情商常被视为与社交智力等同，两者都强调人际交往能力。
The nutritional value of brown rice is often considered equivalent to that of white rice, but with added health benefits due to its fiber content.
**中文释义**：糙米的营养价值通常被认为与白米相当，但由于其纤维含量，还具有额外的健康益处。
Under certain economic models, a dollar today is not equivalent to a dollar tomorrow due to the time value of money.
**中文释义**：在某些经济模型下，今天的1美元并不等同于明天的1美元，这是由于货币的时间价值。
In diplomacy, the principle of reciprocity means that one country will offer privileges to another only if it receives equivalent treatment in return.
**中文释义**：在外交上，互惠原则意味着一个国家只有在得到相应对等待遇的情况下才会向另一个国家提供特权。
The establishment of currency exchange rates is based on the principle of purchasing power parity, aiming for equivalent buying power across different currencies.
**中文释义**：汇率的制定基于购买力平价原则，旨在实现不同货币间购买力的等价。
In a scientific experiment, the control group is used as an equivalent benchmark against which the results of the experimental group can be compared.
**中文释义**：在科学实验中，对照组被用作一个等价基准，用来与实验组的结果进行比较。