G Rating
G Rated movies are intended for General Audiences, with all ages admitted. To the MPAA, G ratings are most notable for what the films don’t include – no sex and nudity, substance abuse, or realistic/non-cartoon violence.(很干净啥都没有)
##PG Rating A PG movie rating stands for Parental Guidance, as some material may not be suitable for children. There may be mild strong language and some violence, but there will not be substance use or abuse.（轻度脏话和暴力，无嗑药）
##PG-13 Rating PG-13 rated movies stand for Parental Guidance-13, with parents strongly cautioned, as some material may not be suitable for children under 13. Again, it’s a matter of what isn’t in the film; any nudity has to be non-sexual, any swear words have to be used sparingly, and, in the event of the specific obscenity we politely call the F-word, not used in a sexual context.（非性的裸体，性片段不用fuck）
##R Rating Rated R movies mean Restricted, with no one under 17 admitted without an accompanying parent or guardian. This rating is given for strong and frequent language and violence, nudity for sexual purposes and drug abuse.（17下没有父母监督不可，强烈频繁脏话和暴力，性目的裸体和嗑药）
NC-17 Rating
Movies with an NC-17 rating mean No one under 18 admitted. This rare rating is given to films which feature mature elements in such profusion – or in such intensity – that it surpasses even the R. The MPAA bases this rating on the assumption that most parents would not want children to see this material without supervision – and, of course, it’s their definition of “Most parents.（哈哈哈））”（成人电影，艺术为主）
