steel 1 S3 W3 / stil / 名词

1 [不可数名词] strong metal that can be shaped easily, consisting of iron and carbon :

a steel bridge

stainless steel (= steel that does not change colour ) knives

2 [不可数名词] the industry that makes steel :

Sheffield is a major steel town.

3 nerves of steel the ability to be brave and calm in a dangerous or difficult situation

4 [可数名词] a thin bar of steel used for making knives sharp