一对企鹅的寓意是什么象征简介:Then he said to Sun Haodong angrily: Our Brother Can said that he likes to convince people with virtue. Please explain Ptolemy's theorem and Helen's formula to us.
Then he said to Sun Haodong angrily: Our Brother Can said that he likes to convince people with virtue. Please explain Ptolemy's theorem and Helen's formula to us.