Else we'll be back to using balloons like "Project Daedalus," serviced by nuclear ramjets.

否则我们将倒退到像“代达罗斯项目”使用气球，由核动力喷气机来维护。

youdao

Else we'll be back to using balloons like "Project Daedalus," serviced by nuclear ramjets.

否则我们将倒退到像“代达罗斯项目”使用气球，由核动力喷气机来维护。

youdao