stand out一般指那些十分引人注目，夺目的事物，会特指一些人或事物特别优秀，但有时候也会形容人过于自负高调，引申为高调，突出，引人注目，脱颖而出。

【例句】
With the help of the Internet, people are now able to easily borrow ideas from other cultures to help them stand out.
有了互联网，现在人们可以轻松地从其他文化中汲取灵感，让自己脱颖而出。

They took no notice of him, he did not stand out, he was in no way remarkable.
他们没在意他，他并不突出，一点也不引人注目。