1．螃蟹英文：Crab，英 [kræb] 美 [kræb]。
2．cancer这个词派生自希腊语中表示螃蟹的karkinos一词。Cancer is derived from the Greek word for crab, karkinos.
3．螃蟹虽然好吃，却容易让人感到饱足。Although it is tasty, crab is very filling.
