美国已经制造了能够打击地下目标的小型“碉堡克星”核弹。

The U.S. has already created small "bunker-buster" nukes that can penetrate underground targets.

youdao

美国已经制造了能够打击地下目标的小型“碉堡克星”核弹。

The U.S. has already created small "bunker-buster" nukes that can penetrate underground targets.

youdao