【口语突破】
1.they've stood you up!
他们放你鸽子了
stood sb. up:If a boyfriend or girlfriend stands you up, they fail to keep an arrangement to meet you.
爽约
First she agreed to come out with me, then she stood me up.
她先是同意跟我出去，後来又爽约了。
如：Don't let your friends down.不要让你的朋友失望。
2.You feel that they've let you down!
他们让你失望了。
let you down：a feeling of dissatisfaction that results when your expectations are not realized放下，降低，使失望