xiā / hé / páng / xiè / de / wài / ké / zhōng / dōu / hán / yǒu / fēng / fù / de / jiǎ / qiào / sù

虾和螃蟹的外壳中都含有丰富的甲壳素。

The shells of shrimp and crabs both contain abundant chitin.