sell someone down the river

US /sel ˈsʌm.wʌn daʊn ðə ˈrɪv.ər/
UK /sel ˈsʌm.wʌn daʊn ðə ˈrɪv.ər/
"sell someone down the river" picture
1.

trair alguém, vender alguém

to betray someone for one's own benefit, especially someone who trusts you

:
I can't believe he would sell me down the river after all we've been through.
Não consigo acreditar que ele me trairia depois de tudo o que passamos.
The politician was accused of selling his constituents down the river by voting against their interests.
O político foi acusado de trair seus eleitores ao votar contra os interesses deles.