standard; norm; criterion · (adjective) standard · good; correct; conforming to a standard

The modern version, which is now popularly recognized in China as the standard qipao, was first developed in Shanghai after 1900.

The criterion of the scientific status of a theory is its falsifiability, or refutability, or testability.

Standard Chinese is also called Mandarin.

When it comes to my turn to speak, I confuse the words 'standard' and 'common', and end up saying that the north-eastern accent is 'the most common'.

Standard Chinese, commonly referred to as Mandarin, is based on Pekinese.