1、The coffee machine needs to be descaled regularly to maintain its optimal performance.
咖啡机需要定期清除水垢，以保持其最佳性能。

2、You can use a descaling solution to descale your kettle.
你可以用除垢液来清除你的水壶中的水垢。

3、It's important to descale your showerhead to prevent clogs and maintain water flow.
清理淋浴头是非常重要的，可以防止堵塞并保持水流畅通。