rail at -用法

rail at

reproach；abuse；complain bitterly of责骂；辱骂；对…大发牢骚

It's no use your railing at fate．抱怨命运不好是无济于事的。

We must not simply rail at a comrade when he makes mistakes，but we should help him correct them．当一个同志犯了错误时，我们不要仅仅责骂他，而应该帮助他改正。