youthfulness
n. 年轻
近义词：youth，adolescence，juvenility，
英英释义
Noun
- the freshness and vitality characteristic of a young person
例句
用作名词(n.)
- It is the Foundation of Youthfulness.那是年轻的秘诀。
- But of course we're actually about extending or restoring physical and mental youthfulness and vitality.但是，我们当然实际上是扩展和保持体力的和精神的年轻和活力。