英语沙龙：睡姿不变对肾有害

Sleeping tight could be bad for your kidneys

Good news for restless sleepers¹ －－researchers at the University of California tell us that kidney stones could be caused by sleeping too long in one position．Over ７５percent of people with recurrent kidney stones who always slept on one side got stones on that side of the body．This led the researchers to suggest that if the person stays in one position，the blood flow can become sluggish² and stones（made from substances including calcium） and magnesium³ may then form．

睡姿不变对肾有害

对睡眠中不太安稳的人来说，这是个好消息：加利福尼亚大学的研究者告诉我们，长时间保持一个睡姿可能会导致肾结石。７５％以上患有复发性肾结石且睡姿总是保持一个方向的人，极易在被身体压迫的那一侧产生结石。研究人员对此的解释是，如果你总是保持一个姿势，血流将不畅通，进而可能会导致结石（由钙和镁等物质组成）产生。 

1 sleepers   

n.卧铺（通常以复数形式出现）；卧车( sleeper的名词复数 )；轨枕；睡觉（呈某种状态）的人；小耳环

参考例句：

• He trod quietly so as not to disturb the sleepers. 他轻移脚步，以免吵醒睡着的人。 来自辞典例句
• The nurse was out, and we two sleepers were alone. 保姆出去了，只剩下我们两个瞌睡虫。 来自辞典例句

2 sluggish   

adj.懒惰的，迟钝的，无精打采的

参考例句：

• This humid heat makes you feel rather sluggish.这种湿热的天气使人感到懒洋洋的。
• Circulation is much more sluggish in the feet than in the hands.脚部的循环比手部的循环缓慢得多。

3 magnesium   

n.镁

参考例句：

• Magnesium is the nutrient element in plant growth.镁是植物生长的营养要素。
• The water contains high amounts of magnesium.这水含有大量的镁。