For rats, social behavior essentially consists of sniffing and play fighting.
对于大鼠，其社会行为基本包括四处闻味和打闹。
The courtship of a sun bear is quite spectacular they will show such behaviour as hugging, play fighting and even head bopping with each other.
马来熊的求爱过程是十分壮观的，牠们会显示出拥抱、打斗游戏、甚至互相撞头的行为。
For half an hour Jimmy and Shandy played in the garden, rolling around the grass, play-fighting.
吉米和姗蒂在院子里玩了半个小时，他们在草地上打滚，玩格斗游戏，总是姗蒂赢。
He has found that play-fighting with a father who manages how rough the play becomes, teaches a child boundaries for their physicality.
他发现，如果父亲能很好的控制格斗游戏的剧烈程度，儿子能在其中掌握肢体冲突的底线。
He has found that play-fighting with a father who manages how rough the play becomes, teaches a child boundaries for their physicality.
他发现，如果父亲能很好的控制格斗游戏的剧烈程度，儿子能在其中掌握肢体冲突的底线。
应用推荐