Derustit
电化学除锈法
🗣️ 情景例句
How are you doing, Richard?
现在怎么样， Richard？
On coming home, he switched on the television.
他一到家就打开了电视。
He was rather elderly with grey hair and clear blue eyes.
他上了年纪，有着灰白的头发和明亮的蓝眼睛。