名词
中文翻译：铁石心肠
同义词：
['iron-hearted', "heart of iron例句：1. The old man was so stubborn that he refused to listen to anyone's advice.（这位老人非常固执，不听任何人的建议。）2. She had a heart of iron and never gave up on her dreams.（她意志坚定，从不放弃自己的梦想。）"]
例句：
-
1. The old man was so stubborn that he refused to listen to anyone's advice.
这位老人非常固执，不听任何人的建议。
-
2. She had a heart of iron and never gave up on her dreams.
她意志坚定，从不放弃自己的梦想。
-
3.The company's CEO is known for his iron-hearted approach to business.
该公司的首席执行官以其对商业的坚定态度而闻名。