The truth, the goodness and the beauty are criteria that measure the practical activity, and the rhetoric is the graceful means to get the best result in communication.

真、善、美是人类衡量实践活动的标尺，修辞是达成最佳传播效果的优美化手段。

youdao

The Modern Educational Technology(MET)is an independent branch of education science. It applies the multi media computer and network communication technology to the practical activity of education.

现代教育技术是指以多媒体计算机和网络通讯技术为核心的信息技术应用于教育教学实践活动而产生并逐渐形成的一门教育技术学科。

youdao

He wants to establish whether it was part of a practical activity taught to and studied by sailors looking to navigate by the stars.

BBC: NEWS | UK | Wales | Scholar revives ancient subject