showstopper

1.While gasping for air he informs you that he has found a potential showstopper bug in the 4.0 release candidate.

边喘气边告诉你他发个4.0发布办里潜在重大缺陷。

2.The lack of a radio room station is a casualty of an aggressive schedule, and can in no way be construed as a showstopper.

可以说，取消无线电舱是这代硬伤，就像是个精彩表演被突然打断。