It is difficult to steel the razor.

把剃刀口钢化不太容易。

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Do not experience wind and rain, not a tree length, from Bai Lian, difficult to steel.

不经历风雨，长不成大树，不受百炼，难以成钢。

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One obstacle to the rally continuing is the tight market for credit, which has made it difficult for Chinese businesses that use steel to borrow money.

紧缩的信贷市场是反弹持续的障碍之一，因为它让使用钢铁的中国企业很难借到资金。

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Karl Kohler, chief executive of Tata Steel's European operations, said the proposals were part of a strategy to "transform ourselves into an all-weather steel producer, capable of succeeding in difficult economic conditions".

BBC: Port Talbot steel works