water quality preservation

英 美
  • 水质保持
  • preservation n.保存;维护;防腐
  • quality n.品质;才能;特质adj.高品质的;棒极了
  • water n.水;海域;雨水;海水v.给...浇水;给...供水;加水稀释;充满眼泪;给...水喝
    1. Most lakes in Tibet are still in a pristine state, with the quality of water within the state's standards.
      湖泊大多数仍处于原生状态,水质保持在国家标准之内。