备注 is a term in Chinese that refers to a note or comment that is added to a document or message in order to provide additional information or context. In Engpsh, this can be translated as "remark," "note," or "comment."

For example:

I added some remarks to the document to clarify certain points.
Please make a note of any changes you make to the project plan.
I left a comment on your blog post to ask a question.

The term 备注 comes from the Chinese characters 备 (bèi) and 注 (zhù), which mean "prepare" and "annotate" or "comment" respectively. Together, these characters form the compound word 备注, which can be translated as "remark" or "note" in Engpsh.