英语翻译
题目
英语翻译
Astronomers have witnessed the biggest bang since the big bang—the moment about 15 billion years ago when the universe was created in a massive explosion.The huge burst of energy from the edge of the universe is estimated to be second only to the moment of creation in its explosive force,releasing more energy in two seconds than the sun will give out in it lifetime.Scientists hope the explosion—known as a gamma-ray burst because it emits energy in the form of gamma radiation—will shed light on the earliest stages in the evolution of the stars and galaxies.Gamma-ray bursts cannot be seen by the human eye,but if they could the sky would light up like a camera flash each time they occurred.They are by far the most energetic events in the universe and,until now,have remained largely a mystery.
The latest gamma-ray burst to be detected accurately occurred last December.Using a network of telescopes and satellites,the astronomers were able to calculate its distance from Earth at
答案
天文学家曾目睹爆炸以来最大的大爆炸,目前大约15亿年前,当宇宙还创造了巨大的爆炸.巨大的能量爆发的边缘宇宙估计是仅次于时刻创造的爆发力,释放更多的能量在两秒钟比太阳将在其一生.科学家们希望,爆炸,称为伽玛射线...
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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