A role of task instance is to support user interaction - presenting data to the user and collecting data from a user.

任务实例的一个作用就是支持用户交互——把数据显示给用户并从用户那里收集数据。

youdao

The interaction occurs within a special business area whose role is to facilitate interactions between other business units.

——交互发生在一个特殊的业务领域内，其角色是方便其他业务单元之间的交互。

youdao

As a way of describing the important characteristics related to a service interaction, the formal service specification plays a key role.

作为描述与服务交互相关的重要特征的方法，形式化的服务规范在服务治理中起关键作用。

youdao

It plays a big role in gravitation, in the Coulomb interaction.

它在引力和库仑力中都起着重要的作用

耶鲁公开课 - 基础物理课程节选

We think that the element of human interaction does play a role in consumer electronics retail.

FORBES: Best Buy Continues To Diversify By Selling Geek Squad Services

The group sessions are presided over by a supervisory teacher whose role it is to promote interaction and guide the students through a range of topics and modes of discussion.

UNESCO: Country Profile: Uruguay