词汇	barbon cycle
释义	barbon cycle 碳的循环
随便看	sport ethics sport event sport event group sport event investment Sport events sport events in same field sport events operated sport events separated by net sport events timer sport event training theory sportex sport exchange sportexe sport exercise sport exercise for keeping health sport exercises sport exhaustion sport extcises sport facilities sport facilities in the countryside sport facilities management financial services sport facility sport-facilitydesign sport fair industry sport fan