2--Yes, G stands for General Audiences, PG means Parental Guidance suggested, R is restricted to audiences under 18 and X means explicit content.
 
1--Does anyone pay any attention to those ratings anymore?
 
2--Remember when we were kids? Theaters wouldn't let kids in to PG moives without a parent.
 
1--I remember that I never saw an X moives even displayed.
 
2--Now with video rentals it's all a personal matter.
 
1--Yea, I never see theaters turn people away for their age anymore either.
 
2--Now we have to make a choice about what we will see and what we won't.
 
===================================
注解：
 
1.rating评估 
2.pay attention to注意...    
3.turn away不准进入；驱逐
 
===================================
译文：
 
1--你还记得电影分级代表的意思吗？
2--是的，G代表普遍级，PG代表保护级，R代表限制级，未满十八岁不得观看，X代表严加限制级。
1--现在还有人会遵守分级吗？
2--还记得我们小时候吗？保护级的电影如果没有父母陪同，电影院就不会让孩子进去。
1--我记得那时根本没有X级电影。
2--观在有了录像带出租店，分级就变成个人的选择了。
1--是啊。我现在也没看过电影院会因为一个人的年龄而赶他走的情况。
2--现在我们只能自己把关，决定哪些能看，哪些不能。