1、During the Spring and Autumn Period, the agricultural production was highly subject to the seasonal changes with the invention of iron tools, thus forming the concept of Solar Term.───春秋战国以后随着铁制农具的出现，农业生产对季节性的要求更高了，就逐渐形成了节气的概念。
2、Iron ore prices on the spot market – for immediate delivery – more than doubled over the period, although they have since fallen back.───在现货交易市场，以即买即付形式交易的铁矿石的价格翻了一翻（虽然现在价格开始回落）。
3、The planet orbiting Kepler 10, by contrast, has an orbital period of a mere 20 hours and is so dense that it is probably made of iron.───相比之下在开普勒-10轨道中发现的那颗行星其轨道周长只有20小时，而且密度很高以至于研究员估计行星内部是由铁组成的。
iron period（意思翻译）
铁器周期
iron period（相似词语短语）
1、cerium period───铈周期
2、pay period───发工资期；[劳经]工资结算期
3、iron───vt.熨；用铁铸成；n.(Iron)人名；(英)艾恩；adj.铁的；残酷的；刚强的；n.熨斗；烙铁；坚强；vi.熨衣；烫平
4、trial period───受审期，试用期
5、averaging period───[统计]平均周期
6、cretaceous period───白垩纪
7、period───n.周期，期间；时期；一段时间；经期；课时；句点，句号；adj.某一时代的
8、billing period───账单收费期；结算期
9、acclimation period───缋化周期；n.驯化周期
iron period（双语使用场景）
1、During the Spring and Autumn Period, the agricultural production was highly subject to the seasonal changes with the invention of iron tools, thus forming the concept of Solar Term.───春秋战国以后随着铁制农具的出现，农业生产对季节性的要求更高了，就逐渐形成了节气的概念。
2、Iron ore prices on the spot market – for immediate delivery – more than doubled over the period, although they have since fallen back.───在现货交易市场，以即买即付形式交易的铁矿石的价格翻了一翻（虽然现在价格开始回落）。
3、The planet orbiting Kepler 10, by contrast, has an orbital period of a mere 20 hours and is so dense that it is probably made of iron.───相比之下在开普勒-10轨道中发现的那颗行星其轨道周长只有20小时，而且密度很高以至于研究员估计行星内部是由铁组成的。