Might the idea of near-hypersonic passenger aircraft, which has lain dormant for a few years, be coming back?

已被搁置多年的超音速民航客机概念是否会再次复苏？

youdao

I spent all that evening there, and went NOT back to my habitation, which by the way was the first night, as I might say, I had lain from home.

那晚我就留在那里，没有回家。顺便说一句，这是我第一次在外面过夜。

youdao

Reeds that had lain dormant under the dust grew again, and fish from the Euphrates moved back into the waterways.

NPR: Iraq's Marshlands Face A Second Death By Drought