was no small achievement.若翻译成“实在是有些牛逼”，会不会有点粗鲁？

Surgery. The Zulu reaction to an operation is at times obstinate refusal. Their fear is like many of the dying. I remember one patient who refused an operation.He was told by both staff and family not to leave the hospital. On the day of surgery, he escaped by climbing up onto the roof and refused to come down.Eventually the fire brigade had to get him down. What was most remarkable with this feat was that the patient had an IV in his subclavian, a chest drain, and a urinary catheter. How he managed to climb onto the roof with all these three items intact was no small achievement.

was no small achievement.若翻译成“实在是有些牛逼”，会不会有点粗鲁？

手术。对手术，祖鲁人有时会根深蒂固的抗拒。他们惧怕手术不亚于惧怕死亡。我记得曾经有个患者拒绝手术。无论医护人员还是家属都告诉他不要离开医院。但手术当天，为逃避手术，他爬上屋顶并拒绝下来。最后，动用了消防队才将他救下。最令人惊奇的是，该患者还带有锁骨下静脉导管、胸腔引流管与导尿管。他如何成功地带着这三样导管爬上屋顶竟无脱落和损坏，实在是有些牛逼。