As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.

• 作为一种习惯，66%25的人在接吻时会闭上眼睛。另外一些人则喜欢观察他们的伴侣在接吻时脸上的表情变化。