There was social intercourse between the old and the young.

老年人和年轻人之间有社会交往。

《柯林斯英汉双解大词典》

He has sustained his fierce social conscience from young adulthood through old age.

他从青年时代到晚年一直保持着强烈的社会良知。

《柯林斯英汉双解大词典》

'Old' has two possible antonyms: 'young' and 'new'.

old的反义词可能有两个：young和new。

《牛津词典》

Rosalyn Schanzer shows readers the young man who was only twenty-two years old when he left Plymouth,England in eighteen thirty-one.

VOA: special.2009.02.27

Because as a young, four or five-year-old company, if we're trying to attract somebody from a company that's been around since before I was born, that is in the computer industry, that's pretty hard.

因为作为一个只有四五岁的年轻公司，如果我们想要吸引大家的注意,尤其是在公司创立之前，这在电脑行业是很难的。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

If only you'd known you had another 50 years, that you weren't going to die young-- or James Dean, going to burn out fast and die young-- if only you'd realized you were going to live to the ripe old age of 97, you would have picked a different life for yourself.

如果你知道自己还剩下50年，你不会英年早逝-,或者说你不会油尽灯枯，英年早逝-,如果你知道,你可以活到97岁高龄，你就会为自己选择另一种生活。

耶鲁公开课 - 死亡课程节选

Frenchman Gilles Simon crushed 18-year-old American qualifier Donald Young 6-1 6-3 to set up a second-round meeting with world number one Roger Federer on Wednesday.

BBC: Djokovic opens defence in style

But when the 71-year-old senator is matched against the 46-year-old senator, the young fellow wins.

FORBES: Obama Is Better For McCain

And this is the cause of my life -- new hope that we will break the old gridlock and guarantee that every American -- north, south, east, west, young, old -- will have decent, quality health care as a fundamental right and not a privilege.

CNN: Transcript: Edward Kennedy's DNC speech