cumulene累: tired; fatigued; weary接: come into contact with; come ...双键: double bond; DNA烃: hydrocarbon双键烃: doublebonded hydrocarbon; double-bondedhydrocarbon下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:累接双键烃，即可在微信中查询翻译
