These things were conceptually possible all along, but some mundane advances are required before it all comes together and somebody actually does it.

这些东西过去一直作为概念上的可能存在，但在它们集合在一起并且有人实际做出以前还必须有一些现实的进展。

youdao

These things were conceptually possible all along, but some mundane advances are required before it all comes together and somebody actually does it.

这些东西过去一直作为概念上的可能存在，但在它们集合在一起并且有人实际做出以前还必须有一些现实的进展。

youdao