soapbox
/ˈsəʊpbɒks/noun
1- a box or crate used as a makeshift stand by a public speaker公共演说者做临时演讲台的箱子：
as modifier a soapbox orator.街头演说者。
1.1
- figurative a thing that provides an opportunity for someone to air their views publicly〈喻〉给人们提供公开发表言论机会的事物：
fanzines are soapboxes for critical sporting fans.
爱好者杂志为运动爱好者提供了评论的公共论坛。
1.2
- chiefly historical a box or crate in which soap is packed and transported〈主史〉肥皂箱。