厄尔尼诺和拉尼娜联手给美国造成了一系列麻烦。
请阅读以下文章，看一看厄尔尼诺和拉尼娜现象所起的作用。
Please read the following article and find out what role El Ni?o and La Ni?a play.
由于受热带厄尔尼诺和拉尼娜现象的周期变化，全球温度的年际变化是很大的。
There’s substantial year-to-year variability of global temperature caused by the tropical El Niño-La Niña cycle.
由于厄尔尼诺和拉尼娜现象，以及所有其它的因素，要研究在全球变暖的情况下飓风的是很复杂的。
Because of the el Ni? O and La Ni? A effects, and all those other factors, figuring out what might happen to hurricanes in a warmer world is, well, complicated.
这些预报考虑到了厄尔尼诺现象、拉-尼娜现象、不断增长的温室气体水平以及太阳活动和全球海洋的自然变化。
The forecasts take into account el Nino and la Nina, ballooning greenhouse gas levels as well as solar effect and natural variations in the world's oceans.
大概每隔三至五年就会发生拉尼娜现象和厄尔尼诺现象。
La Ninas and El Ninos happen about every three to five years.
拉尼娜和厄尔尼诺现象每三到五年时间就会发生一次。
La Ni? As and El Ni? OS happen about every three to five years.
这两种气候现象通常称为拉尼娜和厄尔尼诺现象。
拉尼娜和厄尔尼诺现象每三到五年时间就会发生一次。
La Nina and El Ninos happen about every three to five years.
1998年7月28日至8月25日，滨洲线因洪水两次中断行车，今后，厄尔尼诺现象和拉尼娜现象按自然规律还要每隔2～7年发生一次。
From July 28, 1998 to August 25, 1998, operation of Binzhou railway was interrupted twice by the flood; according to the natural law, the phenomena of Einino and Lanina will occur every 2~7 years.
拉尼娜现象的增强和频发及在最近几十年中其温暖天气的对应物厄尔尼诺现象强烈暗示着由于全球变暖而与更为温暖的海洋温度有联系。
The increased intensity and frequency of La Nia and its warm weather counterpart El Nio in recent decades strongly suggests a link to warmer ocean temperatures as a result of global warming.
拉尼娜现象的增强和频发及在最近几十年中其温暖天气的对应物厄尔尼诺现象强烈暗示着由于全球变暖而与更为温暖的海洋温度有联系。
The increased intensity and frequency of La Nia and its warm weather counterpart El Nio in recent decades strongly suggests a link to warmer ocean temperatures as a result of global warming.
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