However, when surface waters are warm (as during an el ni? O), they do not allow the colder, deeper currents to upwell and effectively block the flow of life-sustaining nutrients.
可是，如果海面水温较高(例如在厄尔尼诺期间)，深层海水就无法上流，从而大大阻断了这些生命必须营养的正常循环。
"The Americas are greatly affected by El Ni? O," Trenberth says. "Europe is much less affected."
川伯斯说：“南北美洲受厄尔尼诺现象影响很严重，欧洲受的影响则要小得多。”
"The Americas are greatly affected by El Ni? O," Trenberth says. "Europe is much less affected."
川伯斯说：“南北美洲受厄尔尼诺现象影响很严重，欧洲受的影响则要小得多。”
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