lingkiki

1.问题是你无法确切知道正在发生什么。the problem is you never kown what will happen next.
2.什么使我们真正感到快乐？what make us fell real happy?
3.长时间以来，对持久幸福感的追求一直是科学家和许多相关调查关注的目标。for a long time, to keeping happiness is a target  for sientists and a lot of  survey.
4.A man of words and not of deeds is like a garden full of weeds.