快速答案
legal 可表示合法，也可在口语中表示“很棒”；jurídico 专指法律领域相关。
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
legal
legal, lawful, or cool
Use legal for what the law permits, and in informal Brazil, what is nice or enjoyable.
jurídico
legal or juridical
Use jurídico for what relates to law, legal analysis, courts, or the legal profession.
如何选择
- legal: Choose legal if the sentence points to what the law permits, and in informal Brazil, what is nice or enjoyable.
- jurídico: Choose jurídico if the sentence points to what relates to law, legal analysis, courts, or the legal profession.
例句
O acordo é legal e válido.
The agreement is lawful and valid.
A empresa pediu orientação jurídica.
The company requested legal advice.
常见误区
An assunto jurídico is a legal matter, but it may concern conduct that is ilegal. The field and the lawfulness are different questions.
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 legal，一次用 jurídico。如果两个版本都可以，说明意思怎样变化。