chilled steel

例句：

1. 1. The engineer used chilled steel to make the new bridge.
   工程师使用冷却钢制造了这座新桥。
2. 2.The construction crew was using chilled steel for the scaffolding.
   施工队正在使用冷却钢搭建脚手架。
3. 3. The cold weather made it difficult to work with chilled steel.
   寒冷的天气使得使用冷却钢工作变得困难。