Many people soothe their consciences by purchasing only free-range fowl and eggs, blissfully ignorant that "free range" has very little practical significance.

许多人只买自由放养的家禽和鸡蛋，以此来安抚自己的良心，幸福地忽视了“自由放养”几乎没有实际意义。

The practical significance of the vote is nil.

此次投票的实际意义等于零。

This has very great practical significance.

这具有十分伟大的现实意义。

Solving this problem has practical significance.

解决这一问题，有着现实意义。

Therefore, this study has some practical significance.

因此，本文的研究有一定的现实意义。