这种系统据称还是完全静音的，地基或空基雷达很难探测到。

The system is reportedly 100 percent silent and extremely difficult to track by air on ground-based radar systems.

youdao

这种系统据称还是完全静音的，地基或空基雷达很难探测到。

The system is reportedly 100 percent silent and extremely difficult to track by air on ground-based radar systems.

youdao