美国情报官员知道他是中国两点内爆式核弹的设计者。

American intelligence officials had learned that he was the designer of China's two-point bomb.

youdao

美国情报官员知道他是中国两点内爆式核弹的设计者。

American intelligence officials had learned that he was the designer of China's two-point bomb.

youdao