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Voice 1: There were four nuclear reactors at the Chernobyl power plant. These reactors contained machines and chemicals to create heat. Then machines changed heat into electricity.
聲音1：切爾諾貝利核電站有4個核反應(yīng)堆。這些反應(yīng)堆包含機器和用來制造熱能的和化學(xué)物質(zhì)。之后機器會將熱能轉(zhuǎn)化為電能。
Voice 2: On April 25, 1986, workers performed a test on reactor number four. They shut off many of the safety controls. The men started to cool the reactor. They used cooling rods. Cooling rods are long thin pieces of the chemical boron. But the reactor cooled too quickly. So, the workers pulled the cooling rods out of the reactor.
聲音2：1986年4月25日，工作人員在4號核反應(yīng)堆進(jìn)行測試。他們關(guān)閉了大部分安全裝置。男性工作人員開始冷卻核反應(yīng)堆。他們使用了冷卻棒。冷卻棒是一塊又長又細(xì)的化學(xué)品硼。但是反應(yīng)堆冷卻地速度太快了。所以工作人員將冷卻棒從反應(yīng)堆中撤了出來。
Voice 1: Then the reactor began to heat up again. It became too hot too quickly. The tubes for the cooling rods started to melt. Workers could not put the cooling rods back into the reactor. The reactor continued getting hotter. It produced much more energy than normal. The fuel in the reactor started to explode. The water in the cooling system turned into steam. This steam blew the top of the reactor building off. Air from outside entered the reactor. It caused another explosion. Each explosion released harmful chemicals into the air and onto the land.
聲音1：隨后反應(yīng)堆開始再次加熱。而且加熱的速度太快了。用來放冷卻棒的管子開始熔化。工作人員無法將冷卻棒重新放入反應(yīng)堆中。反應(yīng)堆在繼續(xù)升溫。其產(chǎn)出的能量遠(yuǎn)大于正常值。反應(yīng)堆中的燃料開始爆炸。冷卻系統(tǒng)中的水變成了蒸汽。這些蒸汽將反應(yīng)堆的屋頂吹掉了。外部空氣進(jìn)入了反應(yīng)堆中。這引發(fā)二次爆炸。每起爆炸都向空中和土地釋放了有害化學(xué)物質(zhì)。
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