| 释义 |
甲壳动物jiǎqiào dòngwù节肢动物的一类,全身有硬的甲壳,头部和胸部结合成头胸部,后面是腹部。头胸部前端有大小两对触角,足的数目不等。生活在水中,用鳃呼吸。虾和蟹是最常见的甲壳动物。{crustacean; subphylum of arthropods, including shrimps, crabs, barnacles and lobsters, that usu. live in the water, breathe through gills, and have a hard outer shell, two pairs of feelers, different number of pairs of legs, jointed head and chest, and abdomen} |