More than 15 million adult americans suffer from diseases of the kidneys , which often impair the ability of the organs to remove toxins from the blood .
大约有一千五百万美国人正忍受着肾脏疾病的折磨，这些疾病往往损害了他们的肾脏移除血液中毒素的能力。
Because loud sounds , for example from whizzing speedboats , distract them , and apparently impair their predatory skills .
