manual application of lubricant
英
美
- 人工润滑,手工润滑
双语例句
- Males who engage in mutual masturbation sometimes find it practical to apply some saliva or artificial lubricant to their penises in order to avoid hurting sensitive penile areas.
相互从事手交的男性发现，为了避免刺痛敏感的阴茎及其周围性敏感区，对阴茎使用唾液或人工润滑液比较实用。
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