来源：https://reurl.cc/A4RgK
第一段
Black Panther has been everywhere in recent years - but spotting one of the
animals the famous superhero is named after in the African wilderness is a lit
tle more rare.
想请问一下
这个红色的部分是不是应该加个括号之类的？
为什么它是直接插入句子当中呢？
这样是什么样的文法用法呢？

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...one of theanimals [(which) the famous superhero is named after] in the African wilderness is a little more rare.