The heart specialist performed a successful surgery.
心脏专家成功完成了一次手术。
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(英语一) 

型
听力真
精听 For example, doctors did not have devices allowing them to go inside the human body to detect health problems or to perform delicate surgery. Repair crews did not have a way of identifying broken pipeslocated deep within a high-rise apartment building.
例如,医生没有设备允许它们在人体内检测健康问
或执行精确的外科手术。修理队没办法检查深藏在高层公寓建筑中的破裂管道。