Adding changes inspired by #19403.

Added changes from #19403:
* Adding spaces between english and chinese characters.
* Using the translation for "complement" from #19403.

Not added changes:
* Adding spaces for title.
* Change punctuations from halfwidth to fullwidth.
* Translations other than "complement".

Changes not related with #19403:
* Translating the word "package" into chinese "软件包".
* Minor changes to some wording.