She really could not touch upon such an indelicate subject.

她实在不想触碰如此令人窘迫的话题。

《柯林斯英汉双解大词典》

When they touch upon emotion they grow sentimental, when they reason they are childish.

当他们触及到情感问题时，他们就变得多愁善感，当他们进行辩论时他们就变得十分孩子气。

youdao

Here I would like to briefly touch upon two major issues.

我现在主要介绍两个问题。

youdao

Here I would like to briefly touch upon two major issues.

我现在主要介绍两个问题。

youdao