After a summer of work in the country, Jack was as hard as steel.

在乡下工作了一个夏天后，杰克浑身肌肉结实。

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Darkness and pressure, here where the water is as cold and hard as steel.

黑暗和压力，水是如寒冷的这里和难的如钢。

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Hard as steel is, it will bend or break under the action of a strong force.

钢虽硬，但在强力作用下也会弯曲或断裂。

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The strings on his boots were as hard as steel.

VOA: special.2010.05.01

It feeds through a stylus that is "as hard as steel, " says Mark Seetin of the U.S. Apple Association.

WSJ: Out of Odor: Offensive-Smelling Bugs Put U.S. Farmers on the Defensive

In Jamshedpur men in thick denim shirts and hard hats watch as molten steel is poured from a gigantic ladle.

ECONOMIST: The Tata group

Germany's SGL Carbon (6, SGG) has fallen 33% since May and has yet to recover as it supplies primarily the hard-hit steel and semiconductor industries with carbon and graphite products, which include electrodes, laboratory components and furnace linings.

FORBES: Magazine Article