ribosylthymine核糖: ribose酰: acyl嘧啶: pyrimidine; metadiazine核糖胸腺嘧啶核苷: ribothymidine胸腺嘧啶核糖核苷: ribosylthymine; ribothymidine; thymine ribonucleoside下载手机词典可随时随地查词查翻译