oindexoxyneurine./ok-si-noor-een, -in, -nyoor-/US // ˌɒk sɪˈnʊər in, -ɪn, -ˈnyʊər- //氧氮素,氧氮芥,氧氮,氧气素Definitionsn.noun · 名词1. Chemistry.›betaine. Level 5More words in o →