One of them climbed aboard a soapbox and began informing the locals why gays should be allowed in the military.

他们中间的一个人登上了小讲台，开始跟当地人讲军队为什么应该允许招募同性恋者。

...soapbox speeches.

露天演讲

We were interested in pushing forward certain issues and getting up on our soapbox about them.

我们对推进某些问题十分关注，很想就这些问题发表我们的意见。

I wanted to talk about the pension age. It's rather a soapbox of mine.

我想谈一谈领取退休金的年龄这个问题，对此我颇有想法。