long shot

US /ˈlɔŋ ˌʃɑt/
UK /ˈlɔŋ ˌʃɑt/
"long shot" picture
1.

apuesta arriesgada, poca probabilidad

an attempt or guess that has only a small chance of success but is worth trying

:
It's a long shot, but we might as well try.
Es una apuesta arriesgada, pero bien podríamos intentarlo.
Winning the lottery is a complete long shot.
Ganar la lotería es una apuesta arriesgada total.