a regular record of your thoughts, opinions, or experiences that you put on the internet for other people to read

She writes a food blog in which she shares recipes, tips, and restaurant reviews. 她写一个食物博客，分享菜谱和窍门以及餐馆评论。

I read about it in/on a blog.

to write or add material to a blog

She blogs about fashion. 她写有关时尚的博客。