He strolled like a man in the park without a care or a worry in the world. Like he had>

Music is the universal language of mankind.

译文：国家已经残缺不全，总是需要去修补，为了国家牺牲自己怎敢吝惜生命。

The process of doing mathematics is more important than the result.

原来女大十八变是骗人的。

Collaboration is the key to solving complex challenges.