Can somebody try to explain in short, when it is appropriate to use bezüglich and when it is not?
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"bezüglich" is normally not used in colloquial language. It is cumbersome written language, meaning concerning. It is often used when it is a bit difficult to find an appropriate preposition. A variant for "bezüglich" is "in Bezug auf". In English concerning.
As you like it short:
bezüglichis appropriate, if you want to explicitely refer to something.