youthfulness

基本解释

One of the most striking things about the quantum revolutionaries was their youthfulness.
這些量子革命者最引人矚目的情況之一就是他們風華正茂。
huzhangao.blog.163.com
Do you wake up every morning full of vim and vigour, ready to tackle the day with all of your energy, youthfulness and vitality? No?
你是否每天早上都神採奕奕，準備用你全部的能量來迎接一天的挑戰，感覺年輕又有活力？或許不是？
By selecting the right color scheme, you can create an ambiance of elegance, warmth or tranquility, or you can convey an image of playful youthfulness.
選擇對的色彩搭配，可以營造一種高雅、溫馨和甯靜的氛圍，又或者打造出青春活潑的景象。

His outlook on life was youthful, and he kept that youthfulness alive throughout his life, even during his suffering.
NPR: Johnny Griffin: In Memoriam
Snapping off his clean white teeth, his voice had a gee-whiz youthfulness until, catching hold, it shifted to take on the hardscrabble surroundings.
NEWYORKER: The Tree Line, Kansas, 1934
Being hairless has become identified with the idealization of youthfulness, explains Professor Susan A. Basow, head of the psychology department at Lafayette College in Easton, Pa.
FORBES: Zapped!