如果你想表示某物变成了钢铁，你可以使用英语表达"turn into steel"，意思是变成了钢铁。这个表达的来源可能源于英语中的一个成语"toughen up"，意思是变得坚强，强化，而钢铁是一种非常坚固的金属，因此人们常常用"turn into steel"来比喻某人或某物变得坚强。
下面是几个使用"turn into steel"的英文例句，并附上中文翻译：
After going through so much hardship, I feel pke I've turned into steel. (经历了这么多艰难，我感觉自己变成了钢铁。)
She was able to turn her pain into strength and turn into steel. (她能够将痛苦转化为力量，变成钢铁。)
The experience of being bulped made him turn into steel and never show weakness again. (被欺负的经历使他变成了钢铁，再也不愿意展现软弱。)
下面是几个使用"turn into steel"的英文例句，并附上中文翻译：
After going through so much hardship, I feel pke I've turned into steel. (经历了这么多艰难，我感觉自己变成了钢铁。)
She was able to turn her pain into strength and turn into steel. (她能够将痛苦转化为力量，变成钢铁。)
The experience of being bulped made him turn into steel and never show weakness again. (被欺负的经历使他变成了钢铁，再也不愿意展现软弱。)