2 sentences

1. 人类在一个充满威胁的世界中演化。

   rén​lèi zài yī​ge chōng​mǎn wēi​xié de shì​jiè zhōng yǎn​huà.

   Humans evolved in a world filled with threats.

   Source: CCMatrix

2. 演化就像一个搜索引擎，不过并不是非常好用的那种。

   yǎn​huà jiù xiàng yī​ge sōu​suǒ​yǐn​qíng, bù​guò bìng​bù​shì fēi​cháng hǎo​yòng de nà​zhǒng.

   Evolution is like a search engine, though not a very good one.

   Source: CCMatrix