ambiguous

The boundary line also has an ambiguous meaning. 13, sort of like the two teams in the Russian video, beating each other naked and topless. 

The boundary line also has a mean meaning. 13 people, a bit like the Russian team in the two teams playing group, the people who beat each other did not wear clothes, naked upper body. 

text:borderline has also a kind meaning of ambiguity.13,being no clothes like these person who are beating in two team in vedio of russia.

边界线还有一种暧昧的意思。13人，有点像俄罗斯视频中两队打群架，击败对方的这些人的没穿衣服，赤裸上半身。