Many experts say prescribed burning should be used more often but it can be dangerous for firefighters.

许多专家说，应该更频繁地使用人工燃烧，但它对消防员来说是危险的。

And it wasn't until the 1950s when the U.S. government started to take prescribed burning seriously.

直到20世纪50年代，美国政府才开始认真对待规定火烧。

Prescribed burning and managed wildfires are not well-supported.

规定的燃烧和管理的野火没有得到很好的支持。

And the best news of all is that prescribed burning produces so much less smoke than wildfires do.

最好的消息是，规定的燃烧产生的烟雾比野火少得多。

JON SARLIN, CNN BUSINESS PRODUCER: This fireball-dropping drones are improving one of the oldest and most effective ways of preventing extreme wildfires, prescribed burning.

CNN商业制片人乔恩·萨林：这种投掷火球的无人机是防止极端野火最古老和最有效的改进方法之一，即人工燃烧。

That's likely where we got the phrase " Fight fire with fire" and though Shakespeare meant it differently, prescribed or controlled burning is fighting wildfires with fire.

这可能就是“以其人之道还治其人之身”的出处，但是莎士比亚用它来表达不同于此的意思，规定火烧指的就是用火来抵御野火的方式。

These and other successes have led forest managers to prescribe controlled burning for much of the fire-prone western U.S. , but few forests actually receive their recommended dosage.

所有这些成功案例让森林管理员明确规定美国西部大部分火灾易发区应进行人为控制燃烧，然而真正对症下药的森林少之又少。

They're drones that drop fire in the form of, quote, dragon eggs to perform something called prescribed burning or starting a fire in order to avoid one later.

它们是无人机，引用一下，以蛋的形式投放火种，来执行一种叫做人工燃烧或引发火灾，以避免今后的火灾。