| 例句 |
red flagnoun something that tells of approaching danger or riskthe résumé she accidentally left on the office printer was a red flag that she was planning to quit caution, red light, tip-off, tocsin, wake-up call, warning omen, portent, premonition, presagenotice, notificationbuoy, indicator, knell, sign, signalforetaste, foretokenannouncement, declaration handwriting on the wall all clear in 1748 |