A developingdevelopingL1研究人类的起源和发展。processing a photosensitive material in order to make an image visible weather patternpattern/ˈpætərn/L2模式；规律a regular and repeated way in which something happens or is done called El Niño could begin in the next few weeks. UN scientists say it is 80 percent certain that El Niño will start between June and August. Some forecastsforecastsL1挂在舞台后面的背景布景。forecasts suggest this El Niño could be one of the strongest on record. It will likely raise temperaturestemperaturesL1在任何程度上或范围内。temperatures on a planet already much warmer because of climate change.
El Niño happens when winds that normally blow east-to-west become weaker or reversereverseL1作为……的先驱或早于……出现。turning in the opposite direction. This allows warm water to spreadspreadL1研究人类的起源和发展。act of extending over a wider scope or expanse of space or time across the central and eastern Pacific Ocean. Scientists have observedobservedL1挂在舞台后面的背景布景。discovered or determined by scientific observation rising sea surface temperatures and lower air pressurepressureL1放大。the act of pressing in the central Pacific. Both are signs that El Niño is on its way. Once it begins, El Niño usually lasts about one year.
A strong El Niño will cause more extremeextreme/ɪkˈstriːm/L2极端的；极度的very great or severe; far beyond what is usual or normal weather around the world. WMO secretary general Celeste Saulo said it will "exacerbateexacerbateL1棒球运动员在跑垒时必须遵守的规则。make worse; "This drug aggravates the pain" droughtdrought/draʊt/L2干旱a long period of time with little or no rain and heavy rainfall and increase the risk of heatwavesheatwavesL1虽然不精确，但已经相当接近正确答案。heatwaves both on land and in the ocean." For example, it often brings hot, dry weather to parts of South America, Southeast Asia, and Australia. This raises the chances of droughts and wildfires. In the southern US, heavier rainfall can increase floodingfloodingL1面积单位，等于100平方米。a technique used in behavior therapy risks.
The UN's secretary general, António Guterres, warned the world to prepareprepareL1面积单位，等于100平方米。make ready or suitable or equip in advance for a particular purpose or for some use, event, etc. He said El Niño conditionsconditionsL1连续发生。the atmospheric conditions that comprise the state of the atmosphere in terms of temperature and wind and clouds and precipitation "will pour fuel on the fire of a warming world." Droughts in South America and Southeast Asia could hurt cropscrops/krɒps/L2农作物；庄稼plants grown by farmers for food, such as wheat, rice, or vegetables. This may lead to smaller harvestsharvestsL1棒球运动员在跑垒时必须遵守的规则。harvests and higher food prices. Also, fishing communities in South America might have smaller catches because less nutrient-rich water reaches the surface.
