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📯 This emoji represents a horn. It is usually used to indicate broadcasting, announcing news or getting attention. For example, in some public places such as schools and shopping malls, horns are used to convey important information. In social software, it can also be used to indicate that some news is going to be released or to remind others to pay attention to something.
The meeting is about to start. Everyone, please pay attention 📯
Broadcast announcement 📯: The library is closed today.