| 1. | These animals have contributed to an ecological balance which has sustained man through hundreds of millennia .
这些动物提供的生态平衡，支持了人类生存的数十万年。 |
| 2. | 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。 |
| 3. | What connection is there between the two
发展旅游业和维护生态平衡之间是矛盾的吗？ |
| 4. | Keeping the balance of nature is so important
保持生态平衡是很重要的。 |
| 5. | It ' s important for us to keep the balance of nature
保持生态平衡对我们来说是很重要的。 |
| 6. | Pursuit of economical and ecological balance
经济和生态平衡追求 |
| 7. | Ecological balance and protection of tongues
生态平衡与语种保护 |
| 8. | It is ebb and flow , tidal gravity . it is ecological balance
这是潮涨潮落、重力潮汐是生态平衡！ |
| 9. | Due process and natural justice
论司法生态平衡与诉讼价值最大化 |
| 10. | Mankind have been trying every means to maintain the balance of nature
人类采用一切手段保持生态平衡 |
