名词 “bluing”
单数bluing, blueing，复数bluings, blueings或不可数
- 增白剂
To keep my white shirts looking bright, I add a bit of bluing to the wash cycle.
- 蓝化处理（指用于钢铁表面的防锈涂层方法）
The blacksmith explained that bluing the steel would help prevent it from rusting over time.
