There are two ways of releasing nuclear energy: fission and fusion.

释放核能有两种方式：裂变和聚变。

You also learned the difference between fission and fusion.

您还了解了裂变和聚变之间的区别。

The U.S. soon graduated from fission weapons to thermonuclear bombs which combined fission and fusion to release even more energy.

美国很快就从裂变武器升级为结合裂变和聚变来释放更多能量的热核炸弹。

Now, to dislodge one of those nucleons and unleash that energy there are two general types of nuclear reactions: fission and fusion.

现在，要驱逐其中一个核子并释放能量， 有两种一般类型的核反应：裂变和聚变。