1.the skills of reading, writing, and arithmetic, considered as the basis of elementary education
1.Many of the children leaving secondary schools today are innumerable and illiterate because they were not taught their three Rs.
现在有许多孩子中学毕业后不会计算，不会用语言表达，因为他们在校时没有受过基础教育。
2.Understanding controllers boils down to the three Rs: return, redirect, and render.
对控制器的理解可以归结为三个R：return、redirect和render。
3.Developing the super large-scale cities can also resolve the "three Rs" problems (rural economy, rural development and rural demography).
解决“三农”问题也需要发展超大型城市。
4.Follow the three "Rs" : Respect for yourself, respect for others, responsible for all your actions.
遵从“尊重自己，尊重他人，为自己的行为负责”原则；
5.Remember the three Rs : Respect for self; Respect for others; Responsibility for all your actions.
记住三个R：尊重自己；尊重他人；对自己的一切行为负责。
6.Remember the three' Rs: Respect for self; Respect to others; Responsibility for all you actions.
记住三个R：尊重自己，尊重他人，对自己言行负责。
7.Follow the three Rs : Respect for self, respect for others and responsibility for all your actions.
遵行三个原则：尊敬自己、尊敬别人、为自己的行为负责。