footnotes

英 [ˈfʊtnəʊts]

美 [ˈfʊtˌnoʊts]

n. 脚注; 次要者
footnote的复数

柯林斯词典

脚注
Afootnoteis a note at the bottom of a page in a book which provides more detailed information about something that is mentioned on that page.
N-COUNT 补充;补充的信息
If you refer to what you are saying as afootnote, you mean that you are adding some information that is related to what has just been mentioned.
1. As a footnote, I should add that there was one point on which his bravado was more than justified.
  我补充一句，他有时表现得过分逞强。
N-COUNT 无关紧要的事;次要事件
If you describe an event as afootnote, you mean that it is fairly unimportant although it will probably be remembered.
1. I'm afraid that his name will now become a footnote in history.
  恐怕他的名字现在会成为历史的注脚。