| 释义 |
〔media〕The middle, often muscular layer of the wall of a blood vessel.中膜：通常是血管壁的中间层或肌肉层〔mesopause〕An atmospheric area about 80 kilometers (50 miles) above the earth's surface, forming the upper boundary of the mesosphere.中间层：离地球表面约80公里（即50英里）的空气地带，形成中间层的上边界 |