Derustit
电化学除锈法
🗣️ 情景例句
We know.
我们知道。
The crow thinks her own birds fairest.
乌鸦总以为自己的雏鸟最美丽。
It was his job to repair bicycles and at that time he used to work fourteen hours a day.
他那时的工作是修理自行车，并且通常是一天工作14个小时。