On two separate morning visits to the scientists' lab, each man walked for an hour at an average speed that, in theory, should allow his body to rely mainly on fat for fuel.
在科学家的实验室里，每个人分别在上午的两次访问中，以平均速度走了一个小时，理论上，他的身体应该主要依靠脂肪作为燃料。
A 12-hour operation by an Italian surgeon specializing in trachea operations removed Beyene's windpipe and all signs of the cancer and then replaced it with the new, lab-grown organ.
通过12小时的手术意大利外科医生将Be yene的癌变气管切除，替换上新的这个实验室培养的组织。
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