If it explodes it is going to be terrible.
如果爆炸那就惨了。
It explodes at concentrations in the air of as little as 5 percent.
当空气中甲烷浓度超过百分之五的时候就会爆炸。
When a large star has burnt all its fuel it explodes into a supernova.
一颗很大的恒星烧尽它的燃料后，就爆炸成超新星。
When your heart explodes is it deathly cold?
当你心裂时，是死一样的冰冷么？
When your heart explodes is it deathly cold?
当你心裂时，是死一样的冰冷么？
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