Although Project Firefly is still grounded, Hartman expects manned flight tests to begin soon.

尽管萤火虫项目还没有起飞，哈特曼预计很快就会开始载人飞行试验。

youdao

Although Project Firefly is still grounded, Hartman expects manned flight tests to begin soon.

尽管萤火虫项目还没有起飞，哈特曼预计很快就会开始载人飞行试验。

youdao