| 单词 | pg | 
| 释义 | pg1 of 3abbreviation (1)1    page   2    picogram   PG 2 of 3abbreviation (2)1    postgraduate   2    prostaglandin   PG 3 of 3certification mark   ˈpē-ˈjē      —used to certify that a motion picture is of such a nature that all ages may be allowed admission but parental guidance is suggested    compare g, nc-17, pg-13, r    | 
	
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