upper eyelid

汉语翻译

例句：

1. Abnormal lowering or drooping of an organ or a part, especially a drooping of the upper eyelid caused by muscle weakness or paralysis.
   下垂一个器官或器官的一部分不正常的下降或垂落，尤其指由肌肉松弛或麻痹引起的上眼睑的下垂
2. Tears are secreted by an organ under the upper eyelid.
   眼泪由上眼睑下面的器官分泌。