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don t get into the water if there is a no swimming sign. third， swimming will be safe and it s good for your health. some people died when they were enjoying themselves in water and most of them were students. summer holiday will be there again. i want t
温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。
