求翻译：大约46亿年前，刚形成的地球被燃烧着的熔岩海洋包裹，岩浆的厚度达到几十万米。那时的地球既没有地壳，也没有地核。渐渐地，熔岩海洋冷却了，形成地壳，漂浮在地球表面，饱受小行星和彗星猛烈而无情的击打。是什么意思？

About 4.6 billion years ago, the newly formed Earth is burning lava ocean parcel of reach tens of meters, the thickness of the magma. Neither when Earth crust, not the Earth's core. Lava ocean gradually cooled to form crust floating on the surface of the earth, suffering from violent and ruthless as

About 4.6 billion years ago, the earth is formed by burning the lava lava ocean parcel, the thickness of several 100,000 meters. At that time, the earth's crust is not, nor does it to. Gradually, the ocean Cooling lava to form a crust, and floating on the surface of the earth, a war-ravaged asteroid

The about 4,600,000,000 years ago, just formed the Earth was burning the lava sea package, rock magma thickness was achieved several hundred thousand meters.At that time Earth already did not have the earth's crust, also did not have the core.The lava sea cooled gradually, forms the earth's crust, f

About 4.6 billion years ago, Earth is burning lava in the sea, forming parcels, thickness of hundreds of thousands of meters of magma. At that time neither the crust of the Earth, or the Earth's core. Gradually, the lava Ocean cooled, forming the Earth's crust floating on the surface of the Earth, s

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