re.ac.ti.vatev.tr.(及物动词)re.ac.ti.vat.ed,re.ac.ti.vat.ing,re.ac.ti.vates To make active again.使重新活跃To restore the ability to function or the effectiveness of.恢复:恢复活动、作用能力或原有的有效性【引伸】reac.tiva.tionn.(名词)