水是不健康
Water is unhealthy
以上为机器翻译结果，长、整句建议使用 人工翻译 。
也有可能是年龄较小的考生饮食并不健康，考试前晚很可能熬夜，所以需要饮用一些水来防止自己脱水。
Or it could be that the younger students might not eat as healthily, have possibly been out late the night before, and might need to drink more water to stop them being dehydrated.
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