officialize
/əˈfɪʃəlaɪz/make official; "We officialized our relationship"
verb [vt. 及物动词] vt. 使官方化;使成为正式;置在政府机关管辖下
the pair officialized their union in Los Angeles 两人在洛杉矶正式结婚
the pair officialized their union in Los Angeles 两人在洛杉矶正式结婚