chip away

I chip away the damaged brick and replaced it with a new one.

我把那块损坏了的砖头一点一点地敲掉,然后换上一块新的.

He used a hammer and chisel to chip away at the wall.

他用榔头和凿子铲墙。

Start with your smallest debt first and chip away at it until it's gone.

从你最小的帐单开始,在你还清帐目以后从账本上划掉它.

I was beginning to chip away at his lead.

在他的带领下,我开始拆除它.

You chip away at the problem until somebody comes up with the right answer.

你们要不断地琢磨这个问题直到有人得出正确答案为止。