three R's

例句：

1. 1. The three R's are reading, reciting, and reviewing.
   这三个R's是阅读、复述和复习。
2. 2.She practiced the three R's every day to improve her English.
   她每天练习这三个R's来提高她的英语水平。
3. 3. The three R's are essential for learning a new language.
   这三个R's对于学习一门新语言至关重要。