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Scavenging hydroxyl free radical activity of chitosan and its derivatives .

壳聚糖及其衍生物清除羟自由基的能力。

Replace scavenging valves following removal .

拆卸后请更换排气阀。

Fish and crabs scavenging for decaying tissue and waste products .

以腐败的机体组织和废物为食的鱼类和螃蟹。

Just a few streets back from luanda 's beach esplanade , entire families can be seen scavenging off refuse tips , without access to clean water or shelter .

就在罗安达滨海广场后面几条街道的地方，人们可以看到，有些人全家都以捡垃圾为生，没有干净水饮用，也没有栖身之所。

An elderly georgian woman was scavenging for copper to sell as scrap when she accidentally sliced through an underground cable and cut off internet services to all of neighbouring armenia , it emerged on wednesday .

格鲁吉亚的一名老妇在搜寻铜卖废品时意外的刨穿了一根地下电缆并切断了邻国亚美尼亚的网络服务，此事发生于星期三。