俚语：Late bloomer/成熟较晚者

　　定义：said of a young person who develops physically or mentally or achieves success at an older age than did his veers指年轻人其生理心理的发展或成就较其他同辈晚

　　例句：Having always been below average in height, my son proved to be a late bloomer, growing 6 inches during his first year in college我儿子总是比别人矮，不过他大一的时候证明他只是成熟较晚，那年他长了六寸。