慢速英语:Is a Fusion Nuclear Reactor Coming Soon?

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短语讲解：

1. There is also the problem of what to do with still dangerous spent, or used up, fuel.

use up 用完，耗尽
例句：You should not touch the film winder before you use up all the film. 
在底片用完之前，不能动卷片旋钮。 

2. Also, the fusion plants can be used for building nuclear weapons.

be used for 用于
例句：It can be used for devising systems to protect against frost damage. 
它可用来设计防止霜害的方法。 

3. He says they make a million times more energy than released from burning coal.

release from 把…从…解脱出来
例句：He had won his first release from the fences of home. 
他第一次成功地脱出家庭的樊笼。