英语语法分析

Hence, the Jovian planets are often called giants.

因此，木星行星通常被称为巨行星。

The most obvious difference between the terrestrial and the Jovian planets is their size.

类地行星和类木行星之间最明显的区别是它们的大小。

The Jovian planets have very thick atmospheres consisting of varying amounts of hydrogen, helium, methane, and ammonia.

木星的行星有非常厚的大气层，且由不同数量的氢、氦、甲烷和氨等元素组成。