螃蟹 HSK 7-9 pángxiè crab Examples 吃螃蟹 chī pángxiè eat crabs 螃蟹很贵 pángxiè hěn guì crabs are expensive 大闸蟹也是螃蟹 dàzháxiè yě shì pángxiè clawed crab is also a crab