Warriors in white fought courageously during the pandemic outbreak. Medical staff here have been providing patients with day-to-day care since thebeginning of the outbreak in the country. Despite the high risk of infection,they still work in long shifts. A lot of people think that they have refined“heroes”.中的最后一句，refined一词我觉得怎么翻译句子都不通顺，开始我觉得可能是打错了，但是假如改成define的话也不对啊，有人能帮忙看看怎么翻译才通顺吗。