Iron deficiency is characterized by chlorosis between veins in young leaves.

缺铁的特征是嫩叶的叶脉之间萎黄。

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A young polio sufferer at Children's Hospital in Boston becomes the first person to use the iron lung artificial respirator.

1928年在波士顿的儿童医院里一个年轻的小儿麻痹症患者成为了第一个“铁肺”人工呼吸机使用者。她几乎是立即从呼吸障碍中恢复过来。

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Early the next spring, the wise man had a plan. He took four young men with him to the iron box on wheels. Each man led his donkey.

春天的伊始，那个聪明人有了一个计划。他带了四位年轻的男士跟他去到那个有轮的铁箱子。每个男士带领着他的驴子。

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When friends of mine were last on the street, there was still a lot of angry young guys with iron bars drifting about.

NPR: Truck Accident Sparks Riots in Afghanistan

But pro-government youth militias, young men armed with iron bars, blocked access to the grounds where the rally was to take place, beating people who tried to gather.

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While speaking with the young soldiers who man Iron Dome, Obama will remind the Middle East of America's pledge to enable Israel to defend itself by itself against all enemies.

CNN: Ambassador: Trip signals Obama's ties with Israel