每日背诵第二期21
So why is drinking enough water so important? A minor water deficiency can lead to headaches, sleepiness, and moodiness, while prolonged dehydration can cause high blood pressure and other serious problems.
为什么喝足够的水这么重要呢？轻微的水分不足会导致头痛、嗜睡和情绪低落；而长期脱水则会造成高血压和其它严重问题。
(短文节选,本篇始于：没事多喝水)
