non-starter
/ˌnɔnˈstɑ:tə(r); ˌnɑn`stɑrtɚ/ n
1 horse that is entered for a race but does not run in it 虽参赛但未上场跑的马
Number 18 in the 2.30 at Lingfield is a non-starter. 在灵菲尔德2时30分一场赛马中, 第18号马不出赛. Cf 参看 starter 1.
2 (fig infml 比喻, 口) thing or person that has no chance of success 无成功机会的事或人
Your proposal is absurd; it's an absolute non-starter. 你的建议不合理, 绝对行不通.