快速答案
gravar 录制内容或刻下标记；registrar 建立书面或正式记录。
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
gravar
to record or engrave
Use gravar for capturing audio, video, or data, or marking something permanently.
registrar
to register or document
Use registrar for creating an official, systematic, or written record.
如何选择
- gravar: Choose gravar if the sentence points to capturing audio, video, or data, or marking something permanently.
- registrar: Choose registrar if the sentence points to creating an official, systematic, or written record.
例句
Gravamos a entrevista em vídeo.
We recorded the interview on video.
O relatório registrou três incidentes.
The report recorded three incidents.
常见误区
A camera grava an interview; a report registra what happened. Both preserve information, but through different kinds of record.
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 gravar，一次用 registrar。如果两个版本都可以，说明意思怎样变化。