国际水协会(一个行业团体)认为，大部分浪费的水是“底面渗漏”，即水是从分布在管道各处的缝隙中滴滴渗出的。
Much of the wasted water is lost through what the International water Association, an industry body, calls "background leakage" -that is, small but widespread cracks that drip water continuously.
这些病态的小血管会渗漏血液及液体，引起视网膜水肿或形成渗出物沉积于视网膜。
Sick of these small blood vessels leak blood and fluid, caused retinal edema or leakage of a deposition in the retina.
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