Is it the skyscraper of the future, or just a pie-in-the-sky idea?

这是未来的摩天大楼，还是一个异想天开的想法？

youdao

Is it the skyscraper of the future, or just a pie-in-the-sky idea?

这是未来的摩天大楼，还是一个异想天开的想法？

youdao