| 释义 |
red flag
noun- an obvious indication that all is not well US, 1968
- Cap’n, the guard around that boxcar is a red flag. I don’t understand why you officers don’t recognize a red flag when you see one. — William B. Hopkins, One Bugle No Drum, p. 80, 1986
- when injecting a drug into a vein, the practice of drawing blood up into the syringe to verify the finding of a vein and to control the pace of the injection US
- — Carsten Stroud, Close Pursuit, p. 275, 1987
- a show of menstrual blood on outer clothing; hence, the bleed period of the menstrual cycle US
- — The Museum of Menstruation and Women’s Health, July 2001
▶ be flying the red flag
to be in the bleed period of the menstrual cycle UK- You can come over, but I’m flying the red flag. — J.J. Connolly, Layer Cake, p. 291, 2000
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