Meanwhile, another " black" (secret) project, the B-2 bomber, was also built using stealth technology.

与此同时，另一项采用隐形技术制造B?2轰炸机的“黑色”（秘密）计划也已开始。

youdao

Meanwhile, another " black" (secret) project, the B-2 bomber, was also built using stealth technology.

与此同时，另一项采用隐形技术制造B?2轰炸机的“黑色”（秘密）计划也已开始。

youdao