名词
中文翻译：铁石心肠
同义词：
['iron-hearted', 'iron-willed例句：1. The patient was given a stern lecture for his reckless behavior.（病人因他的鲁莽行为被严厉训斥。）2. The captain had an iron-willed determination to succeed in his mission.（船长有着坚不可摧的决心要完成他的使命。）3. Despite the tough conditions', 'they persevered with their iron-hearted resolve.（尽管条件艰苦，他们仍然坚持着坚定的决心。）']
例句：
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1. The patient was given a stern lecture for his reckless behavior.
病人因他的鲁莽行为被严厉训斥。
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2. The captain had an iron-willed determination to succeed in his mission.
船长有着坚不可摧的决心要完成他的使命。
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3. Despite the tough conditions, they persevered with their iron-hearted resolve.
尽管条件艰苦，他们仍然坚持着坚定的决心。