[mass noun]movement; motion 运动,运转 ■[count noun](Biology)an undirected movement of a cell, organism, or part in response to an external stimulus (生)外界刺激引发的不自主运动。 比较 taxis ■(Zoology)mobility of the bones of the skull, as in some birds and reptiles (动)(如某些鸟类和爬行动物的)头骨骨骼运动
语源
early 17th cent.: from Greek kinēsis 'movement', from kinein 'to move'