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

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词汇讲解：

1. produce vt. 生产; 产生
例句：Actions produce energy and momentum.
行动力产生能量和动力。

2. sustain vt.维持; 支撑
例句：Money doesn't sustain or fund real economic activity.
货币并不能支撑或资助真正的经济活动。

3. promise vt.允诺，许诺
例句：She more than hesitated to promise that.
她勉强答应了那件事。

4. operate vt. 运转; 操作
例句：You operate it from your couch.
你用遥控器操作它。

5. release vt.释放; 放开
例句：The whole release process is different.
整个发布的过程也不一样。

6. explosion n.爆炸，炸裂
例句：The population explosion is accompanied by a population implosion. 
人口爆炸还伴随着人口爆聚。