In recent years, underground economy has become a burning field of research all over the world.

最近二三十年，地下经济问题逐渐成为国内外学术界的一个研究热点。

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Acrid fumes of still-burning thatch - hours earlier the rooftops of orderly houses - assaulted my eyes and nose as I stepped out onto a bed of ashes in a smoldering rice field.

几个小时前还秩序井然的房屋，现在它们的屋顶都成了燃烧着的茅草。我走出飞机踩到一片还未燃尽的稻田的灰烬上，刺鼻的烟味刺激着我的鼻子和眼睛。

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Based on the field monitoring , investigation and parsing of pollutants sources, a mathematic model was used to calculate the exposure to pollutants from coal burning.

在现场监测、污染源解析的基础上，应用修正后的高斯扩散模型，计算出燃煤污染物暴露浓度。

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An alleged plot is said to have been hatched between the three Polish nationals, resulting in the body of Miss Wells-Burr being discovered in her burning car in a field in Chard.

BBC: Catherine Wells-Burr

Once equipped with mesh-enabled devices, soldiers fanning out on a field or firefighters in a burning building could create an impromptu network, automatically transmitting communications from person to person until returning back to commanders.

FORBES: Motorola Moves Into Mesh