快速答案
比较巴西葡萄牙语中的 idiossincrasia vs. peculiaridade：何时使用每个词，以及要避免的常见错误。
可靠的方法是先判断这个词在句子里的功能，再翻译。
每个词的作用
idiossincrasia
idiosyncrasy
Use idiossincrasia for a distinctive habit, feature, or reaction peculiar to a person or group.
peculiaridade
peculiarity
Use peculiaridade for a particular feature, unusual trait, or distinctive characteristic.
如何选择
- idiossincrasia: Choose idiossincrasia if the sentence points to a distinctive habit, feature, or reaction peculiar to a person or group.
- peculiaridade: Choose peculiaridade if the sentence points to a particular feature, unusual trait, or distinctive characteristic.
例句
Essa e uma idiossincrasia do autor.
That is an idiosyncrasy of the author.
A cidade tem suas peculiaridades.
The city has its peculiarities.
常见误区
Idiossincrasia is narrower and more learned than peculiaridade.
放到语境中练习
从你的真实生活中选一个句子，写两遍：一次用 idiossincrasia，一次用 peculiaridade。如果两个版本都可以，说明意思怎样变化。