an attempt to show other people that you are a good person, for example by expressing opinions that will be acceptable to them, especially on social media

Virtue signalling is the popular modern habit of indicating that one has virtue merely by expressing disgust or favour for certain political ideas or cultural happenings. 释放美德信号是现代常见的一种行为，即仅仅通过表达对某些政治思想或文化事件的厌恶或赞成来表明自己有美德。