oc·tane
noun/ˈɒkteɪn/
/ˈɑːkteɪn/
- a chemical substance in petrol, used as a way of measuring its quality
辛烷（汽油中的化学物质，用于检测汽油的质量） - high-octane fuel
高辛烷值的燃料
Word Originlate 19th cent.: from octo- ‘eight’ (denoting eight carbon atoms) + -ane. - high-octane fuel