And they eat them up, which means that, combined with the fact that the cladding doesn't last very long, you can only run one of these reactors for roughly, say, 18 months without refueling it.
它们会“吃”掉这些中子， 再加上燃料棒外的金属涂层并不持久， 这就意味着，这些反应堆 大概只能运行18个月，在不添加燃料的情况下。