噢头晕大概就是指人蹲久了忽然站起来的那种晕眩好像血忽然涌上头部的那种晕眩眼前还暗了一下
Oh, dizziness is probably the kind of dizziness that occurs when a person suddenly stands up after squatting for a long time, as if blood has suddenly rushed to the head, and the vision has darkened for a moment
以上为机器翻译结果，长、整句建议使用 人工翻译 。