guān / yú / yán / miàn / qí / chéng / de / tǎo / lùn / yīng / qiáng / diào / shuāng / fāng / tóng / yì / hé / ān / quán

关于颜面骑乘的讨论应强调双方同意和安全。

Discussions of facesitting should emphasize mutual consent and safety.