Reading has a profound impact on one' s mentalmaturity.
读书对于人的心智成熟有重要的影响。
2
After class reading of university students is the beginning of mentalmaturity, thus doing such kind of homework so as to lay some foundation is necessary.
大学生的课外阅读，是走向精神成熟的起点，因而先要做一点垫底的工作。
3
Many researchers think word skills, memory and other mental functions crest in the early 20s, as the brain attains full maturity.