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单词	pretensioner
释义	pretensioner noun pre·​ten·​sion·​er ˌprē-ˈten(t)-sh(ə-)nər  plural pretensioners : a mechanism that tightens and locks automobile seatbelts in place in the event of a crash or hard braking Pretensioners, like air bags, rely on a small explosive charge to tighten belts fast enough to reduce injuries even in high-speed crashes. Mark Phelan Word History First Known Use 1979, in the meaning defined above
随便看	anthropoideas anthropoids anthropolatries anthropolatry anthropolatryes anthropolatrys anthropolite anthropolith anthropolithic anthropolitic anthropological anthropologically anthropologies anthropologist anthropologists anthropology anthropomancy anthropometric anthropometrics anthropometries anthropometrist anthropometrists anthropometry anthropomorph Anthropomorpha

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。