mainlineKK [ˋmenˏlaɪn] /ˈmeɪnˌlaɪn/發音形容詞1主流的、主要的Several mainline churches have lost members over the past decade.過去十年，好幾個主流教派的信眾人數都在流失。2幹線的、主線的The village is finally connected to the mainline railway.這個村子終於和鐵路幹線接上了。名詞1幹線、主線Trains on the mainline were delayed for over two hours.幹線上的列車誤點超過兩個小時。2主流His ideas were once radical but are now part of the mainline.他的想法曾經很激進，現在卻已成為主流。動詞1靜脈注射（毒品）口語He admitted that he had been mainlining heroin for years.他承認自己多年來一直在靜脈注射海洛因。顯示全部 6 個義項動詞2大量攝取、狂灌口語、誇飾I was mainlining coffee just to finish the report on time.我為了準時交報告，簡直是在狂灌咖啡。