mainlineOur editors are putting together more complete content — check back in about 20 minutesmainline動詞 · 1形容詞 · 1mainline — verb動詞1. to inject a drug into a vein1.動詞釋義to inject a drug into a vein例句He mainlined heroin.mainline — adjective形容詞1 解釋1. belonging to the most common or mainstream type1.形容詞釋義belonging to the most common or mainstream type例句These are mainline political views.