iron是可數還是不可數

I'll need to iron that dress before I can wear it.

我得先把那件連衣裙燙平再穿。

She was known as the ‘ Iron Lady ’.

大家都稱她為“鐵娘子”。

Iron reacts with water and air to produce rust.

鐵和水及空氣發生反應產生鐵鏽。

Iron the garment on the reverse side.

這件衣服要從反面熨。

This iron is guaranteed for a year against faulty workmanship.

這種熨斗如有工藝缺陷可保修一年。