一些水产生物学家相信外围运河可以改善三角洲地区的生态系统，只有足够的水源才适合鱼类的生存。
Some fisheries biologists now believe building the Peripheral Canal could also improve the delta's ecosystem-as long as the fish were guaranteed adequate water.
在佐治亚州大自然保护协会工作的生物学家艾里森·麦基表示，五角大楼已经承诺让地方团体在重建自然生态系统方面施展更大的拳脚。
Alison McGee, a biologist with the Nature Conservancy in Georgia, said the Pentagon's commitment allowed local groups to be more ambitious in rebuilding the natural ecosystem.
亚伯丁大学生物学家彼得·史密斯和复旦大学生态学家方长明在该项分析的补充评论中写道，两种可能性也许都是真的。
Both possibilities may be true, wrote University of Aberdeen biologist Pete Smith and Fudan University ecologist Changming Fang in a commentary accompanying the analysis.
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