He soon found out what lung specialists already know: an MRI scanner reveals how well a lung moves air, but it only works when the patient is lying on his back.
他很快发现意见研究肺的专家早发现的事：一个MRI(核磁共振成像)扫描仪能够反映肺部是如何呼吸空气的，但需要患者保持仰卧姿势。
He soon found out what lung specialists already know: an MRI scanner reveals how well a lung moves air, but it only works when the patient is lying on his back.
他很快发现意见研究肺的专家早发现的事：一个MRI(核磁共振成像)扫描仪能够反映肺部是如何呼吸空气的，但需要患者保持仰卧姿势。
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