20xx有趣的英語(yǔ)演講話(huà)題(編輯修改稿)
2025-01-12 05:03 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 ligations to protect the environment. environmental problems are being more and more serious all over the world. for example, cars have made the air unhealthy for people to breathe and poisonous gas is given off by factories. trees on the hills have been cut down and waste water is being poured continuously into , wherever we go today, we can find rubbish carelessly disposed. pollution is, in fact, threatening our existence. the earth i
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