年輕的人
從「年輕的時光」轉到「正活在這段時光裡的人」：把時間換成住在那段時間裡的人，於是 youth 也用來指年輕人——可以是整群，也可以是其中一個。
young people · noun · B1
Young people thought of as one group.
青年
核心畫面
You can picture youth as 'the early, young part of life and everything that comes with it' — the season when a person is young. From that one picture the word spreads three ways: the stretch of time itself (one's youth), the young people who are living in it (the youth / a youth), and the fresh, energetic quality that belongs to being young.
可以想成「人生早期那段年輕的時光，以及隨之而來的一切」——一個人還年輕的那個季節。從這個畫面，字往三個方向散開：那段…更多收起
可以想成「人生早期那段年輕的時光，以及隨之而來的一切」——一個人還年輕的那個季節。從這個畫面，字往三個方向散開：那段時間本身（年輕時）、正活在這段時光裡的年輕人（青年／青少年），以及屬於年輕的那股清新有勁的氣質（青春）。From the picture
年輕的特質
從「年輕的時光」抽出它的味道：不再講時間或人，而講「年輕」這件事帶來的那股氣質——看起來、感覺起來年輕、有活力。
youthfulness · noun · B1
The quality of being young; looking or feeling young and full of energy.
青春
Also in this word
time of being young · noun · B1
The time in your life when you are young, especially when you are a teenager.
年輕時
原始詞典資料5 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
youthnoun/juːθ/
- 1
The quality or state of being young.
- Serene, smiling, enigmatic, she faced him with no fear whatever showing in her dark eyes. The clear light of the bright autumn morning had no terrors for youth and health like hers.
- Feel awfully about Scott... It was a terrible thing for him to love youth so much that he jumped straight from youth to senility without going through manhood. The minute he felt youth going he was frightened again and thought there was nothing between youth and age.
- 2
The part of life following childhood; the period of existence preceding maturity or age; the whole early part of life, from childhood, or, sometimes, from infancy, to adulthood.
- Make the most of your youth, it will not last forever.
- I made many mistakes in my youth, but learned from them all.
- 3
A young person.
- There was a group of youths hanging around the parking lot, reading fashion magazines and listening to music.
- 4
A young man; a male adolescent or young adult.
- […]and then a youth appeared—no one quite knew where from or to whom he belonged—but he settled down with them in a happy-go-lucky way, and they all lived together.
- 5
Young persons, collectively.
- The actual brides- and grooms-to-be are not in attendance—many youth would be embarrassed by their parents’ matchmaking efforts, and often do not live in the same city anyway.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。