On paper, it seemed to work. Flight tests on small models, using conventional explosives, were encouraging.

理论上，这似乎是可行的。使用常规炸药对小型模型进行的飞行试验令人鼓舞。

The bomb dropped on Hiroshima released a thousand times more energy than the biggest conventional explosive so other countries were rightfully concerned.

投在广岛的原子弹释放的能量比最大的常规爆炸物多一千倍，因此其他国家有理由担心。

They were as big leap from the first atomic bombs as those devices were from conventional explosives, a thousand times again more powerful.

它们与第一颗原子弹相比， 就像这些装置与传统炸药相比的巨大飞跃一样，威力又强大了一千倍。