courtship colour

例句：

1. 1.The courtship colour of the flowers is a symbol of love and passion.
   花朵的求爱色彩象征着爱和激情。
2. 2.She wore a dress with a color that matched her courtship colour.
   她穿着一件颜色与她的求爱色相匹配的裙子。
3. 3.The couple's courtship colour was red, which symbolized love and passion.
   这对情侣的求爱色是红色，象征着爱和激情。