There is a danger, of course, that play may be misinterpreted or not recognized as play by others, potentially leading to aggression.

当然，有一种危险存在，即玩耍可能被他人误解或不被认为是玩耍，从而潜在地导致攻击。

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The Xiao rounds to clap hands, there of the aggression play echo to stop.

箫绕拍手，那边的侵犯行动应声停止。

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So could seeing violence in a video game be a positive developmental opportunity for children, in that they are free to play out any aggression, taking part of something that they realize is a fantasy world and not reality?

FORBES: Ferguson on Better Research, Addressing Causes of Aggression and Mental Illness and Being Involved with Children's Video Game Content

We could have won by more against Wigan because we were able to play with confidence and aggression from that base.

BBC: Sir Alex Ferguson fires warning to title rivals

As they report in the Proceedings of the National Academy of Sciences, they videotaped the animals' behaviour for several hundred hours over the course of 16 months in order to record three things: facial and vocal expressions, hand and foot gestures, and the behavioural context in which these expressions and gestures took place (eg, grooming, play, sex and aggression).

ECONOMIST: Evidence that the first words were movements, not sounds