A girl he knew had upset him by commenting on his increasing girth.

他认识的一个女孩对他不断增大的腰围说长道短，这让他很不高兴。

Continue commenting on new blog posts.

保持对他们新博文的评论。

commenting on other blogs in your niche

用你的专业视角评论其他博客；

You’re commenting on decisions and its work.

你们对决策和工作发表评论。

You're commenting on decisions and its work.

你们对决策和工作发表评论。