生态平衡

We risk upsetting the ecological balance of the area.

我们有可能破坏这个地区的生态平衡。

To keep ecology in balance is our duty.

保持生态平衡是我们的职责。

Large dams have harmed Siberia´s delicate ecological balance.

大型水坝对西伯利亚脆弱的生态平衡造成了破坏。

The extensive formwork used during casting often has undesirable effects on the environment or the ecology.

在浇筑混凝土时所用的大批模板往往对环境或生态平衡有着不良的影响。

Caries are chronic infectious diseases and the consequence of oral ecologic disequilibrium.

龋病是慢性感染性疾病，是口腔生态平衡失调的结果。