在我的像素3中，我可以看到（在其他）的应用程序中称为"t谷歌注册" 和"x Google注册" 。这些是什么，他们做了什么？我可以安全地禁用它们吗？
更新：如果，如答案中的暗示，这些都在侦听"OK Google" 短语，为什么有两个，它们与"OK Google注册" 的不同以及如何与"OK Google注册" 的不同？
In my Pixel 3 with stock ROM I can see (among other) apps called "T Google Enrolment" and "X Google Enrolment". What are these and what do they do? Can I safely disable them?
UPDATE: If, as alluded in an answer, these are listening for "OK Google" phrase, why are there two of them and how are they different from "OK Google enrolment"?
To disable it:
They're used for hotword detection, e.g. continuously listening for "OK Google".