疏远

Objective To observe the effect of intravascular laser irradiation on bloodfor the elderly patients with rheumatoid arthritis.

目的 观察低强度激光血管内照射治疗老年类风湿性关节炎的疗效，探讨其作用机理。

The Lake area in Jianghan Plain is one of the most ecotypically fragile areas in Yangtse Valley, and here there are four main ecological problems: frequent flood, silt and sand that make the lake become a swamp, water pollution and eutrophication, and the schistosome.

江汉平原湖区是长江流域生态环境最脆弱的地区之一，洪涝灾害严重、泥沙淤积和沼泽化现象普遍、湖泊水体污染与富营养化问题突出、血吸虫未得到根治等是该区目前存在的主要生态环境问题。