4.We have adopted effective measures to control water contamination in our area.我们采取了有效的措施来治理我们这个地区的水污染。
5.New laws have been introduced to control air pollution in the city.为了控制城市空气污染,该市采用了新的法律措施。
6.Air pollution and noise pollution caused by automobiles do harm to our health.由汽车引起的空气和噪声污染对我们的健康造成了危害。
7.Accordingly/Consequently/As a result,it is not difficult to draw the conclusion that people are more and more aware of the importance of environmental protection.因此,不难得出结论,人们越来越意识到环境保护的重要性了。
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