ring someone/something up
phrasal verb with ring verb uk/rɪŋ/ us/rɪŋ/
B1 (给…)打电话
to make a phone call to someone
She rang me up to say she couldn't come. 她打电话给我说不能来。
He rang up the office and asked to speak to the manager. 他打办公室的电话,要求跟经理通话。