1.run away (from sb/...) to leave sb/ a place suddenly 突然离开，逃离
He run away from home at the age of thirteen.他十三岁那年离家出走。
2.run away from sth. to try to avoid sth because you are shy,lack confidence,etc.避开，躲避，回避
You can`t just run away from the situation.这事儿你没办法回避。
3.run away with you . if a feeiing runs away with you,it gets out of your control.失去控制
Her imagination tends to run away with her.她动辄想入非非。
4.run away with sb/together. to leave home, your husband,wife,etc. in order to have a relationship with another person 与某人私奔
She ran away with her boss////she and her boss ran away together.她与老板（一起）私奔了
5.run away with sth .(1)to win sth clearly or easily 轻而易举的赢得 (2)(spoken) to believe sth that is not true 相信（不真实的东西）；误以为
I don`t want you to run away with the impression that all I do is sign cheques all day.我不想要你误以为我整天的工作就是签支票。
。。。。。。。。。。以上内容均出自《牛津高阶英汉双解词典第六版》