Havea say/voice in something在某件事上有发言权

You don’t have a say in this.这件事上，你没有发音权；这没你说话的份。

They want to have a voice in how this would be handled.在如何处理这件事上，他们想有个发言权。

Have one’s say 说出/表达出某人的观点、看法

Just calm down, you’ll have your say. 别着急，你会有机会说的。

As soon as I've had my say I'll sit down.只要让我说出我的看法，我就坐下。

Have the say 某人说了算，有决定权

We all have a say in this, but only the boss himself has the say.这事我们都有发言权，但最终只有老板自己说了算。