dead-end street 死路，死巷子，死胡同

【例句】
The dead-end street was the only access to her home.
那条死胡同是通往她家的唯一通道。

Failure is delay, but not defeat, it is temporary detour, not a dead-end street.
受挫只是耽搁，而不是失败。它只是暂时地走弯路，而不是走进了死胡同。