Severe respiratory problems can result in anyone exposed to the smoke and burning chemical particles that rain down over an area the size of a football pitch.

烟雾弥漫，燃烧着的化学颗粒大量落下，所涉及的区域几近一个足球场大小；暴露其中，任何人的呼吸系统都可能遭遇严重问题。

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The study used an experimental model of brain damage, in which mice are exposed to a chemical that destroys the hippocampus, an area of the brain which controls learning and memory.

该研究应用了脑损伤的试验模型，该试验中，使小白鼠接触一种能破坏控制学习和记忆的海马体的化学物质。

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Ancient Chinese lacquer is an important invention in the chemical technology and arts and crafts area.

漆器是中国古代在化学工艺及工艺美术方面的重要发明。

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Critics, however, say the mining operation will destroy forests in the area, contaminate groundwater and pollute the air with chemical substances like lead, mercury and arsenic.

BBC: Arsonists attack Hellas gold mine in northern Greece

The stress on the trees causes them to emit a chemical that draws the beetle, hopefully clustering the insects in an area and making it easier to destroy their eggs before they become adults.

WSJ: Mass. creates quarantine zone to contain insect

D. in chemical engineering, he abandoned the field for the more promising emerging area of electronics.

FORBES: Andy Grove's Last Stand