快速答案
pesquisa 是广泛、系统的研究或调查；enquete 是快速的意见投票。
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
pesquisa
research, study, or survey
Use pesquisa for a systematic investigation, academic study, market survey, or careful search.
enquete
poll
Use enquete for a short set of opinion questions, often informal and not statistically representative.
如何选择
- pesquisa: Choose pesquisa if the sentence points to a systematic investigation, academic study, market survey, or careful search.
- enquete: Choose enquete if the sentence points to a short set of opinion questions, often informal and not statistically representative.
例句
A pesquisa ouviu mil consumidores.
The survey interviewed one thousand consumers.
O site publicou uma enquete sobre transporte.
The site published a poll about transportation.
常见误区
An online enquete should not automatically be called pesquisa científica. The sampling and method determine what conclusions it supports.
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 pesquisa，一次用 enquete。如果两个版本都可以，说明意思怎样变化。