porcupine-凯发k8官网

22-08-30 q: whats the difference between a bunch of lawyers in a porche and a porcupine? a: a porcupine has pricks on the outside!...

12-12-11 anyone unfortunate enough to encounter a porcupine's quills knows that once they go in, they are extremely difficult to remove. researchers at mit and brigham and women's hospital now hope to exploit the porcupine（豪猪） quill's unique properties t...