专家说为防止火灾所采取的措施可以避免毁灭性灾难，因为如果允许小树和灌木肆意生长，形成的“阶梯燃料”会点燃更大的树。

Experts say measures taken to stop fires can end up causing more devastating ones by allowing the growth of small trees and underbrush, "ladder fuels" that ignite bigger trees.

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一些专家认为困意具有周期性。

Some experts believe sleepiness comes in cycles.

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每个人都会有心烦意乱的时候。但值得注意的是，越来越多的心理健康专家把愤怒情绪到了失控的状态列为一种疾病。

Everyone gets upset on occasion. But intense, out-of-control anger could be classified as an illness, according to a growing number of mental health experts.

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