提示：在把这些代表参考文献引用的标号设置为上标时可以使用“替换”功能，可以一次性把所有的标号设置为上标。
Tip: You can use the "Replace" function when setting these symbols that represent reference citations as superscripts, and you can set all the symbols as superscripts at once.
然而，有时我们会在已经排好顺序的参考文献里插入其他的参考文献：
However, sometimes we insert other references into the already ordered references:
