它们害怕它英语怎么说

"They fear it" 的英语表达是 "They are afraid of it."

来源：这是一个常用的英语短语，表示某人对某事有恐惧感。

例句:

"They are afraid of the dark." (他们害怕黑暗。)
"She is afraid of heights." (她害怕高处。)
"Many people are afraid of spiders." (许多人害怕蜘蛛。)