lost cause

Trying to help him to improve his pronunciation is a lost cause.

想正发音，那肯定没什么用。

Every bat flying out of the belfry a lost cause, every whoopla a groan over the radio from the private trenches of the damned.

每一只飞出钟楼的骗幅都是一失败的事业，每一次狂欢都是注定要死的人从单人战壕无线电台发出的呻吟。