污染
wū rǎn
pollution, contamination
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污染空气很不好。
wū rǎn kōng qì hěn bù hǎo。
Polluted air is bad.
减少污染很重要
jiǎn shǎo wū rǎn hěn zhòng yào
Reducing pollution is important
政府要减少空气污染。
zhèng fǔ yào jiǎn shǎo kōng qì wū rǎn。
The government wants to reduce air pollution.