introductoryadj.
英 ɪntrə'dʌkt(ə)rɪ | 美 ,ɪntrə'dʌktəri
中文adj. 引导的，介绍的；开端的
词根词源
introductory (adj.)c. 1600, from Late Latin introductorius, from introduct-, past participle stem of introducere "to lead in, bring in" (see introduction). Also used in English from c. 1400 as a noun meaning "introductory treatise or textbook."
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