interaction

n. 相互作用,相互影响

There should be a lot more interaction between the social services and local doctors.

社会公益服务机构和当地医生应该加强协作。

The dynamics of bodies moving relative to gases, especially the interaction of moving objects with the atmosphere.

空气动力学相对于气体的物体移动，特别是移动物体与大气相互作用的动力学