It was just a passing comment, he didn't expand.

那只是顺便提到的评论，他没有展开。

《柯林斯英汉双解大词典》

It was just a passing comment, he didn't go on about it.

那只是一笔带过的评论，他没有继续论述。

youdao

The two episodes generated considerable comment on the internet, with the photo from Seattle - taken by a passing businessman - re-posted more than 40, 000 times.

网民对上述两件趣事评论颇多。 骆家辉大使上任照片摄自一位路过的商人，被转载了40000多次。

youdao

and his wife was known as "agent 123." U.S.officials did not comment on the kind of information the Myers are accused of passing to Cuba.

VOA: standard.2009.06.06

Speaking with an African-American candidate a few days ago, she made a comment in passing that made me stop and think.

FORBES: Is Your 'Natural' Hairstyle Preventing You from Getting a Job?

One woman passing by made a comment about the crowds and said she's never seen it like this during past inaugurations.

CNN: Washington locals excited, but bracing for inconvenience

Caracas rejects US diplomat comment on amount of drugs passing through Venezuela.

CENTERFORSECURITYPOLICY: Saving El Salvador