常見(jiàn)例句a family of mammals of order Sirenia including dugongs and Steller's sea cow 哺乳動(dòng)物中海牛目中一科包括儒艮和斯特勒儒艮a family of mammals of order Sirenia including dugongs and Steller's sea cow. 哺乳動(dòng)物中海牛目中一科包括儒艮和斯特勒儒艮。 返回 Sirenia