翻譯成英文/(急)

約五十億年前，在太陽誕生。太陽系的成員，可分為內外兩群，即所謂的內行星與外行星。
　 靠內的一群，由內而外是水星、金星、地球、火星，都是由岩石和金屬所構成，以含鎂和鐵的矽酸鹽為主。由於它們的質量與地球相似，所以稱為類地行星（內行星）。
　靠外的一群，由內而外依序是木星、土星、天王星、海王星。它們大概主要是由氣體和冰所構成，成分含沼氣和氨較多。前三顆因與木星相似，所以稱為類木行星（外行星）。
這八大行星差不多在同一平面上，繞著太陽依近於圓形的橢圓軌道運行，它們彼此也各有各的衛星環繞於它們。
Approximately 5,000,000,000 years ago, is born in the sun. Solar system's member, May divide into inside and outside two crowds, namely so-called in planet and outer planets.

In depends on a crowd, But by in outside is Mercury, Venus, the Earth, Mars, All is constitutes by the rock and the metal, by contains the magnesium and the hard silicates primarily. Because their quality is similar with the Earth, Therefore is called the kind of place planet (in planet).

Outside depends on a crowd, but by in outside is in order Jupiter, Saturn, Uranus, Neptune. They probably mainly are constituted by the gas and the ice, the ingredient contains the methane and the ammonia is many. Because first three are similar with Jupiter, Therefore is called the Jovian planet (outer planets).

These eight major planets almost in identical plane, Depends on around the sun nearly in the circular elliptical orbit movement, their each other also respectively have each satellite encirclement in them.

Approximately 50 hundred million years ago, are born in the sun. Solar system's member, may divide into inside and outside two crowds, namely so-called in planet and outside planet. In depends on a crowd, by in but outside is Mercury, Venus, the Earth, Mars, all is constitutes by the rock and the metal, by contains the magnesium and the hard silicates primarily. Because their quality is similar with the Earth, therefore is called the kind of place planet (in planet). Outside depends on a crowd, by in but outside in order is Jupiter, Saturn, Uranus, Neptune. They probably mainly are constitute by the gas and the ice, the ingredient contains the methane and the ammonia are more. First three because are similar with Jupiter, therefore is called Jovian planet (outside planet). These eight big planets almost in the identical plane, around the sun according to nearly the circular elliptical orbit movement, their each other also respectively have each satellite to surround to them.