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

他用锤子和凿子将墙壁一点点凿掉。

《柯林斯英汉双解大词典》

"It is a very thick wall," she acknowledged as she inspected it, hammer and chisel in hand.

“这是一堵非常厚实的墙”，手中拿着锤头和凿子，她承认道。

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To get there they had to chisel away a concrete cell wall, and, of course, it had to be done slowly and on the QT.

为了到达这个通风口，他们必须凿穿一堵混凝土墙，当然，必须缓慢而秘密地进行这个工作。

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When a pretty girl asks you for a piece of wall, instead hand her a hammer and a chisel.

CNN: How I brought down the Berlin Wall

For the better part of a day, I chipped away at the wall, blistering my hands and flattening the head of the chisel until it looked like a mushroom.

CNN: How I brought down the Berlin Wall