open-heart surgery

例句：

1. 1.She underwent open-heart surgery to improve her health.
   她接受了开放心脏手术以改善健康。
2. 2.The patient needed an open-heart surgery to repair his damaged heart.
   病人需要开放心脏手术来修复他的受损心脏。
3. 3.Open-heart surgery is a complex procedure that requires specialized training and equipment.
   开放心脏手术是一项复杂的程序，需要专门的培训和设备。