1. The fish are not sharks or killer whales, but favourite eating varieties like cod and skate which grow to unnatural sizes, sometimes as much as twelve feet in length.
    这些鱼并不是鲨鱼或逆戟鲸，而是深受人们喜爱的食用鱼品种，如鳕鱼和鳐鱼，只不过它们长得出奇地大，有时长达12英尺。

2. Her hair is an unnatural colour.
    她的头发不是自然色.

3. Here there is nothing unnatural, such as is often found in language lessons in schools, when one talks about ice and snow in June or scorching heat in January.
    这里没有任何不合自然规律的东西，而在一些学校的语言课上，人们却常常在六月谈论冰雪或是在一月谈论灼热的热浪。