1、 First,we must postulate that if souls exist,they must have some mass.
第一,我们必须假定灵魂存在,他们必须保有物质。
来源:秒词邦搜集整理
2、 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。
来源:秒词邦搜集整理