英语语法分析

The universe encompasses all of space and time we know, so it is beyond the realm of the Big Bang model to postulate what the universe beyond our horizon is.

宇宙包含我们所知的所有空间和时间，所以要求用大爆炸模型解释我们视界之外的宇宙超出了这个模型的限定范围。

Therefore some scientists postulate that the Earth's earliest atmosphere, unlike that of today, was dominated by hydrogen, methane, and ammonia.

因此，一些科学家推断，地球早期的大气与现在的不一样，主要由氢、甲烷和氨构成。

Let's postulate that she is a cook.

我们假定她是一位厨师。