shrink from no difficulty or danger ; make light of difficulties and dangers ; never to evade difficulty and danger ; shun no difficulty and danger
他英勇对敌，不避艰险，赴汤蹈火在所不计。
He faced the enemy valiantly, shuned no difficulties and dangers and would not hesitate to lay down his life if need be.
《新英汉大辞典》
人常在遐想中不避艰险，分析研究并深入追求他自己所赞叹的妙境。
At his own risk and peril, it analyzes and digs deep into its own bedazzlement.
youdao
不避艰险，汉语成语，拼音是bù bì jiān xiǎn，意思是不畏惧艰难险阻。出自《三国志·蜀志·关羽传》。
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