abbr.(英国)继续教育，进修教育

Iron is a chemical element with the symbol Fe.
铁是一种化学元素，符号为Fe。
The human body contains about 5 grams of iron, mainly in hemoglobin.
人体内大约含有5克铁，主要存在于血红蛋白中。
Steel is an alloy primarily composed of iron and carbon.
钢铁主要是铁和碳的合金。
The Statue of Liberty is made of copper, but has turned green due to a layer of patina, which contains iron.
自由女神像是由铜制成的，但由于一层含有铁的绿锈而变成了绿色。
Iron deficiency is a common cause of anemia.
缺铁是贫血的常见原因。
In chemistry, iron can form multiple oxidation states, including +2 and +3.
在化学中，铁可以形成多种氧化态，包括+2和+3。
The ancient Egyptians used iron for making tools and weapons.
古埃及人用铁来制造工具和武器。
Iron ore is extracted from the earth through mining.
铁矿石通过采矿从地下提取。
Iron plays a crucial role in the electron transport chain in cellular respiration.
铁在细胞呼吸的电子传递链中起着关键作用。
The magnetic properties of iron make it useful in electromagnets and hard disk drives.
铁的磁性使其在电磁铁和硬盘驱动器中具有实用性。