Ptosis

[tәusis]

解释:

(noun.) drooping of the upper eyelid caused by muscle paralysis and weakness.

戴维斯整理--From WordNet

解释:

(n.) Drooping of the upper eyelid, produced by paralysis of its levator muscle.

科南录入

解释:

n. inability to raise the upper eyelid.

伯纳黛特校对