The American soldier was said to be like galvanized iron, a material produced for special strength.

VOA: special.2010.03.07

So you pick a better material like iron and steel, that makes a better bridge, we know that now because we have experience with bridges, but still your bridge might fail.

你选择了钢铁作为材料,来造了一座更好的桥,我们现在能够明晰这一点,是因为在造桥这件事上我们现在很有经验,但即使是我们现在造的桥也仍然会倒塌

耶鲁公开课 - 生物医学工程探索课程节选

And due to an explosion, an iron rod passed through his head like so.

因为一次爆炸，一个铁棒像这样穿过了他的头。

耶鲁公开课 - 心理学导论课程节选

It looks something like you'd see when the iron curtain was up or something."

VOA: standard.2010.02.17

and Robert Downey Jr.is,once again, both "Iron Man" and Tony Stark in the sequel that Downey hopes audiences will like as much as they did the original.

VOA: standard.2010.05.19