It is no use saying, 'We are doing our best.' You have got to succeed in doing what is necessary.

I like dogs. You always know what a dog is thinking. It has four moods. Happy, sad, cross and concentrating.

逻辑是最普遍的真理规律的科学。

海洋不仅是一种资源，更是我们对后代的责任，需要保护和维持它。