建设首都绿色生态屏障。
到2005年，完成三道绿色生态屏障建设。
市区、平原地区、山区三道绿色生态屏障初具规模。
Three green ecological barriers took shape in the city zone, the plain area and the mountain belt.
但是对这里唯一的生态系统——那些阻挡未来风暴的天然屏障——的保护措施却收效甚微。
But conservation efforts in this unique eco-system - which serves as a natural barrier to future cyclones - are inadequate.
尽管如此，总体的实验结果仍然表明混合营养体是如何为生态系统提供了一个抵抗灾变的屏障，并阻止大规模崩溃的发生。
Still, the overall results suggest how mixotrophs provide a cushion against catastrophe for certain ecosystems, and may even prevent huge population crashes.
路易斯安那州官员希望开始建造作为屏障的沙堤来阻止石油侵入脆弱的沼泽生态系统；
Louisiana officials want to start building sand berms as barrier islands, to block oil from entering the fragile marsh ecosystems;
湖滨带是连接湖泊水域生态系统与陆地生态系统的一个功能过渡区，是湖泊的最后一道保护屏障。
The riparian zone is a functional transition region, the last protection barrier of lakes, which is connected the lake aquatic ecosystem and the terrestrial ecosystem.
方法应用透射电镜观察脑胶质瘤侵袭微生态系统中血瘤屏障的超微结构改变；
Methods The ultrastructure of blood tumor barrier in gliomas was observed by transmission electronic microscope.
口服乳果糖能有效刺激肠道内双歧杆菌生长，并能减少有害菌生长，调整肠道菌群，有助肠道微生态平衡和屏障功能。
We considered that the lactulose feedings were useful for growing well bifidobacteria, suppression of harmful bacteria, regulated micro flora, for maintained micro-ecological equilibrium in gut.
建造以后的各项指标测试表明，该声屏障取得了良好的降噪效果、生态效益和社会效益。
The test with the indices shows that the noise barriers have achieved satisfying noise-decreasing, ecological and social effects.
微生态学研究表明益生菌能粘附肠上皮细胞，形成天然生物屏障，显著降低这类疾病的发生率。
Microecologic studies show that probiotics adhering to intestinal mucosal surface could evolve nature biologic barriers to decrease the occurrence rate of diseases caused by pathogens.
这一微生态系统与人体固有的肠道屏障系统相互协调、相互作用，保护人体肠道免于致病菌的侵袭。
The micro-ecosystem is able to protect intestinal mucosa against the invasion of pathogen both by itself and by synergies between it and human inherent intestinal barrier.
生态环境综合治理是通过防止土地沙漠化，因地制宜集中连片发挥林、草永久性屏障作用。
Ecological environment should be harnessed through controlling land desertification and utilizating woodland as permanent nature defence.
生态环境综合治理是通过防止土地沙漠化，因地制宜集中连片发挥林、草永久性屏障作用。
Ecological environment should be harnessed through controlling land desertification and utilizating woodland as permanent nature defence.
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