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就是说做不善的事情要受到惩罚,做善事会得到奖赏。 
"Children's books should be as diverse as the children who read them."
【释义】:做很多事却少有成效,不如专心做好一件事情。  
Science is not just about discovery, but about the joy of understanding.
I don't care what people say about me as long as it isn't true.
不要害怕放弃好的东西去追求伟大的东西。