The TR Sound in English - What Is It?

I want to talk a little bit about some examples of students who have shown this curiosity and who have tried to notice new things in their English learning journey. So for example, I remember I was working with a student on the TR sound in English. In English, when native speakers pronounce the letters TR together, we say it like this. But many English learners don't pronounce it as tada, right? And this is incorrect. He was really fascinated by this reality that he hadn't noticed before. It wasn't automatic, but over time, he started to say more and more of these words in the right way. Now he always pronounces these words correctly. That's very impressive.