酸雨、温室效应、臭氧层破环、环境污染等，不断危害着人类，从而，气体传感器的研究与开发十分的活跃。

Acid rain, greenhouse effect, ozonosphere broken and environmental pollution, etc, do harm to man constantly, and so gas - sensors "research and development is very active".

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公路交通给人类带来了文明与进步，但同时也带来了交通事故、环境污染等问题。

Road transportation takes culture and improvement to people, but at the same time it takes accident and environment pollution which have been on the catastrophical level.

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将纤维素物质转化为酒精和氢等生物能源，对解决人类目前所面临的能源短缺与环境污染等问题有重要意义。

The conversion of cellulosic biomass into bio-energy, such as ethanol and hydrogen, will decrease the requairment of fossil energy and improve the environment.

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