pursing是什么意思

There was a curious little smile pursing his mouth.他的嘴角边浮起一丝奇怪的微笑.Why do we stop pursing fun as we get older?为什么当我们长大就停止去最求乐趣?The pursing of lips means catastrophe.他撅嘴的话就意味着灾难....

pursing的音标：...