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1·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。《牛津词典》

2·Large dams have harmed Siberia's delicate ecological balance.

大坝损害了西伯利亚脆弱的生态平衡。《柯林斯英汉双解大词典》

3·They will not only largely influence the ecological balance of the sea, but also can spread some more dangerous illnesses.

它们不仅会在很大程度上影响海洋的生态平衡，还会传播一些更危险的疾病。

4·These actions have greatly affected the ecological balance.

这些行动极大地影响了生态平衡。

5·The semiarid lands bordering the deserts exist in a delicate ecological balance and are limited in their potential to adjust to increased environmental pressures.

沙漠边缘的半干旱土地处于非常脆弱的生态平衡之中，而这些半干旱区域对于持续增加的环境压力的适应能力极其有限。

6·The ecological balance is the instinctive movement of the ecosystem by self cause, self conduct, natural presence, and self existence.

生态平衡是生态系统“自因、自为、自然、自在”的本能运动。

7·The ecological balance is fragile, though.

尽管如此，这里的生态平衡很脆弱。

8·Overfishing has destroyed the ecological balance.

过度捕鱼已经破坏了生态平衡。

9·Protect animals and maintain ecological balance.

保护动物，维持生态平衡。

10·Maintain ecological balance and protect animals.

维护生态平衡，保护动物。