Citric acid is also used in cleaning products because it effectively removes limescale.

柠檬酸也用于清洁产品中，因为它能有效去除水垢。

You have to switch it on to wait. And press the steam. All the limescale will come out of there.

将熨斗的开关打开，等待喷出蒸汽，水垢会随着蒸汽一起出来。