[, ]a warning about sth提醒；警告◆Thanks for the heads-up about business etiquette!感谢你关于商业礼仪的提醒！a short report giving the most recent information, especially about what is going to happen简报◆Let me give you a quick heads-up on the new design.有关这项新设计，让我很快地给你简单说明一下。