Is oral cavity gum nigrescent
口腔牙龈发黑。
Labial color is darker, nigrescent reason?
嘴唇颜色比较暗，发黑的原因?
How to often brush vi babble to return nigrescent ah?
经常刷牙牙怎么还发黑啊?
Is there finger in the symptom of chilblain nigrescent How beware of
冻疮的症状里有手指发黑么怎么提防。
I should crouch only giddy, at the moment nigrescent, want to faint very much! Be how do ah
我只要一蹲下就头晕, 眼前发黑, 好想晕倒!是怎么搞的啊？
I crouch next standing up, fainted, the eye is nigrescent. There is not consciousness at that time.
我蹲下站起来，晕倒了，眼睛发黑。当时没有知觉了。
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