Another study of high school social networks found less bullying and aggression the higher the density of mixed-sex friendships within a given adolescent network.

另一项关于高中社交网络的研究发现，在特定的青少年网络中，异性友谊密度越高，欺凌和攻击行为就越少。

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The detailed definition was introduced amid much disagreement over what constituted mixed-sex accommodation.

BBC: Mixed-sex NHS 'still a problem'

Under the government's definition of mixed-sex accommodation, patients should be kept in bays divided at the very least by fixed full-height partitions.

BBC: Mixed-sex NHS 'still a problem'

Hamas, the Islamist militant group that governs the Gaza Strip, is to introduce a law banning mixed-sex schools for all children over the age of nine.

BBC: Hamas in mixed-sex school ban