kingpinKK [ˋkɪŋˏpɪn] /ˈkɪŋˌpɪn/发音名词1首脑、核心人物、关键人物口语Police finally arrested the kingpin of the smuggling ring last week.警方上周终于逮捕了这个走私集团的首脑。2主销、中心立轴机械The mechanic replaced the worn kingpin on the front axle.技师更换了前轴上磨损的主销。用这个字练口说→