短语词组短语secretory y gland 分泌腺internal secretory gland 内分泌腺secretory gland cell 分泌腺细胞gland secretory duct opening 腺管开口gland secretory duct 腺分泌管;翻译mammary gland secretory cells 乳腺分泌细胞 返回 secretory gland