nigrescent的中文翻譯是什麼意思

When menstruation comes why is blood red gotten nigrescent?

月經來的時候為什麼血紅得發黑?

How to often brush vi babble to return nigrescent ah?

經常刷牙牙怎麼還發黑啊?

Labial color is darker, nigrescent reason?

嘴唇顏色比較暗, 發黑的原因?

Incinerate fertilizer volatilizes nigrescent meeting flying.

灰化肥揮發發黑會飛花.