几乎就在五年前，美国国会削减了一种引起争议的掩体核弹——坚实型核钻地弹——的研究经费。

Almost five years ago, America's Congress cut research funding for a controversial bunker-busting nuke called the Robust Nuclear Earth Penetrator.

youdao

几乎就在五年前，美国国会削减了一种引起争议的掩体核弹——坚实型核钻地弹——的研究经费。

Almost five years ago, America's Congress cut research funding for a controversial bunker-busting nuke called the Robust Nuclear Earth Penetrator.

youdao