It's never too old to learn新概念有一课这么说
或者
Live and learn!
Never too old to learn
It's never too old to learn!
One is never too old to learn
都可以
It's never too old to learn新概念有一课这么说
或者
Live and learn!
Never too old to learn
It's never too old to learn!
One is never too old to learn
都可以