In addition, the glass on the wall and the wall must not make the actual unknown space.

此外，玻璃墙饰必须得靠实墙而置，不会令空间虚实不明。

youdao

In any new work I aim to transport myself into the as yet unknown space before me and possess it as my own.

我在任何新项目里都试图让自己置身于当时处于未知的空间里并将其视为己有。

youdao

It's this sense of the unknown that makes the far side of the moon such an interesting place for scientific and space research.

正是这种对未知的感觉，使得月球的远侧成为科学和太空研究的一个有趣的地方。

youdao

Ed White would leave the protection of the spacecraft and move out into the unknown emptiness of space.

VOA: special.2009.06.24

And just as some early explorers made the ultimate sacrifice while searching for unknown lands, space pioneers may also pay a steep price for bravely going where no human has gone before.

CNN: Mars on the brain? Red Planet pioneers to face cosmic mind trip

Predicting the location of the termination shock was hard, the researchers say, because the precise conditions in interstellar space are unknown.

BBC: Voyager impression (Nasa)

What that might be is unknown, but experiments in space have shown that cosmic rays can have some positive impacts on biological materials.

BBC: Earth News - Cosmic pattern to UK tree growth