I've always had a loud mouth, I refuse to be silenced.

我总是有话就讲，我拒绝保持沉默。

《柯林斯英汉双解大词典》

The press wants people to think that they know what they're talking about, so if you come across as loud, tough or independent, they try and make you sound as if you're a loud-mouth jerk.

媒体想要人们认为他们知道他们谈论的是什么，所以如果你让人对于你的大声、强硬或者不受约束这些方面印象深刻的话，他们会试着让你听起来是个大嘴巴。

youdao

You loud mouth.

你这大嘴巴。

youdao