So, the happy life is the simple life, the happy world is the simple world.

所以，快乐的人生是单纯的人生，快乐的世界是单纯的世界！

youdao

Childhood is a happy period in one's life, and the world of children is a happy world.

童年时代是人生中一段幸福的时期，儿童的世界是一个幸福的世界。

youdao

Animals can make us happy, and we can not live without animals in the world, so we should protect animals and love animals.

动物能使我们快乐，世界上不能没有动物，所以我们要保护动物、爱惜动物。

youdao

Her bright,happy world now was filled with silence and darkness.

VOA: special.2009.11.08

It would make the several thousands social psychologists in this world very happy and proud of their field, if that turned out to be true.

世界上成千上万的社会心理学家,都将十分高兴，并且为自己的学科领域感到自豪，如果这点能成为现实。

耶鲁公开课 - 心理学导论课程节选

to say South Africa is very happy to host the 2010 FIFA World Cup."

VOA: standard.2010.06.11

Happy World Health Day to all of us!

FORBES: The Fight to End Pandemics

And I again thank you very much for your contribution to make this world happy.

UN: Secretary-General

Some would be happy if the World Bank paid a little more attention to environmental concerns.

ECONOMIST: Seattle comes to Washington