1st Class or 2nd Class Control
angle Class Ⅱand skeletal class I malocclusion
Class Ⅰ and Class Ⅱ highways
Class A and class B infectious diseases
A Streetcar Named Desire
an embroidering pouch named hebao
COD detector named ACM-2
combination inhibitor named Z-206
duck herpesvirus type ( named tenta-tively)
geographical named entity
named entity recognition
syndrome named by formulas