fine steel

例句：

1. 1. This fine steelis used in the construction of high-rise buildings.
   这种优质钢用于高层建筑的建设。
2. 2. The fine steel is highly resistant tocorrosion.
   这种优质钢具有很强的耐腐蚀性。
3. 3. Fine steel is often used for cuttingtools due to its hardness and strength.
   由于其硬度和强度，优质钢常被用于切割工具。