In spiritual term, we should respect teachers, classmates and other people work for the school. In environmental term, we should have good habits to keep campus in a clean surrounding.

专业地说来，我们应该尊敬老师、同学和校园里的其他人，应该养成良好的习惯以维持清新的校园环境。

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Health and environmental advocates having long urged U.S. government agencies to tighten the use of some of the 11 chemicals the report cites and called for more studies on their long-term effects.

长期以来，健康和环保倡导者们一直在敦促美国政府部门加强对报告中提及的11种化学物品的使用管制，并呼吁对它们的长期影响进行更多的研究。

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But "it's certainly a very serious thing" that could pose a long-term environmental challenge.

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In a recording from Clarence House, the prince said he remains concerned about climate change and possible long-term environmental damage.

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In recent months, the USGA has declared long-term environmental sustainability, particularly water usage, to be one of its top policy issues.

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