单词

字典词典单词成语造句名言诗词古籍小说

ductless

['dʌktlɪs]

adj. 无导管的

双语例句

1. Endocrinology is defined as the study of the ductless or endocrine glands and their internal secretions.: 内分泌学的定义是:研究无管腺或称内分泌腺及它们的内分泌的科学.