Iron hoes, which made the land more productive, and iron weapons, which made the warrior more powerful, had symbolic meaning in a number of West Africa societies.

铁制锄头使土地更高产，铁制武器使战士更强大，它们在许多非洲西部的部落中都拥有象征性意义。

youdao

Iron and some nickel, both of which are metals.

铁和一些镍，它们俩都是金属。

youdao

In Sichuan, soldiers spent a hard time creeping across Luding Chain Bridge, which was made up of 13 iron chains, in the middle of gun fire.

在四川，士兵们在炮火中艰难地爬过由13条铁链组成的泸定铁桥。

youdao

"We just labored really hard to say, okay,we're audience members who made the first 'Iron Man' successful and we're smart, which is kind of why we were drawn to it;

VOA: standard.2010.05.19

I've given you the periods at the top of the chart: early Bronze Age; middle Bronze Age from about 2100 to 1550; we date the late Bronze age from about 1550 until 1200--the introduction of iron and the beginning of the Iron Age in 1200. Prior to that, the Bronze Age, which is divided into these three periods.

我在这个表格的顶端给你们列了一些时期：,早期青铜时代；中期青铜时代，从约公元前2100年到前1550年；,晚期青铜时代，从公元前1550年到前1200年，即铁器时代前页；,然后公元前1200年开始了铁器时代，在那以前，青铜时代分为那样三个时期。

耶鲁公开课 - 旧约导论课程节选

Tickets for concerts in Brazil are due to go on sale next week -- along with seats for four concerts which are still to be announced, in four more countries, two of which will host Iron Maiden for the first time.

CNN: Iron Maiden to rock Brazil ... again

Archaeologists have also discovered the remains of a later Iron Age village which consists of a number of round houses defined by post holes in the ground.

BBC: Complete neolithic pot found in Didcot

Almost all its sale of iron ore in China is currently through its Asia Pacific Iron Ore Division, which has a limited supply capacity of 9 million metric tonnes of iron ore.

FORBES: Cliffs Buys Thompson And Takes Foothold In Asia, Upside Uncertain