1、He used a hammer and chisel to chip away at the wall.
他用錘子和鑿子將墻壁一點點鑿掉。

2、Its aim is to chip away at your feelings of self-worth and independence.
其目的是蠶食你的感情的自我價值和獨立性。

3、But snoring regularly can chip away at the quality of your own sleep.
但是經常性的打鼾就會逐漸影響你自身的睡眠質量了。

chip away at翻譯