我们发现了一块虚空的石头。

We found a hollow rock.

她的笑声听起来很虚空。

Her laughter sounded hollow.

这棵树的树干是虚空的。

The trunk of this tree is hollow.

他的声音在虚空的房间里回荡。

His voice echoed in the hollow room.

这个箱子是虚空的。

This box is hollow.

《传道书》以其著名的短语“虚空的虚空”而闻名。

Ecclesiastes is known for its famous phrase, Vanity of vanities.

虚空的虚空，凡事都是虚空。

Vanity of vanities, all is vanity.

这是虚空，也是大祸患。

This is vanity and an evil plague.

这也是虚空,也是捕风.

This again is to no purpose and desire for wind.

这也是虚空，也是捕风。

This too is meaningless, a chasing after the wind.