Last week, my teacher told us that we would have a practical activity.

上周，老师告诉我们，我们将会有一个实践活动。

youdao

The practical skill required for this activity is to be able to flatten a hierarchical (tree-like) structure.

此活动所需要的实际技能是能够平面化层次(树形)结构。

youdao

Practical metaphysics considers that the true noumenal existence is a human practical activity and his real life.

实践形而上学认为真正的本体性存在是人的实践活动及其创造的现实生活。

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