用英语介绍螃蟹,外貌特点只需50词左右,

Crabs have two sharp and large pincers. Ifyou are not careful, the crab may grip your fingers firmly and make you painful, Once my brother was gripped by a crab. He put his hand to the crack ora rock very slowly, and moved the crab to one side. Then he held the crab's back, with another hand, forcing it to loosen its pincers Quickly he threw it into my basket.
　螃蟹有两个又大又锋利的钳子.如果你粗心,它会紧紧钳住你的手指,使你感到痛.有一次我哥哥被螃蟹紧紧挟住.他慢慢地将手放在石头的裂缝上,把螃蟹移到了一边.然后用另一只手抓螃蟹的背部,使它松开钳子.马上,他将螃蟹扔进了我的篮子.