The US had just tested its new superbomb. 美国刚刚测试了它的新型超级炸弹。
International observers have been watching with interest since the country's test detonation of a super bomb. 自该国试爆一枚超级炸弹以来，国际观察员们一直在密切关注此事。
It would take many years to develop a single super-bomb. 研制一颗超级炸弹需要很多年。