The big question about whether — is whether this is a hydrogen bomb, like North Korea claimed today, or whether it's just an atomic test like it's carried out before.

现在的关键问题是，朝鲜试验的是其今天声称的氢弹，还是和以前一样的原子弹测试。

During the 1970s, the countdown moved beyond atomic test sites and space missions and onto radio and television shows — and away from the nihilism of a bomb blast toward the triumph of a rocket launch.

在 1970 年代，倒计时超越了原子试验场和太空任务，进入了广播和电视节目——从炸弹爆炸的虚无主义走向火箭发射的胜利。