| 单词 | third eyelid |
| 释义 | third eyelid (once / 407563 pages) n WORD FAMILY third eyelid USAGE EXAMPLESBut the third eyelid actually plays an important role in maintaining the eye's health. Scientific American(Nov 20, 2015) A third eyelid, between the regular eyelids and the cornea, protects the globe and also has a gland at the bottom that produces extra tears. New York Times(Jun 02, 2014) The eye is provided with a nictitating membrane or third eyelid, at the base of which open the ducts of the Harderian gland. Various, Encyclopaedia Britannica, 11th Edit...(2012) n a protective fold of skin in the eyes of reptiles and birds and some mammals Syn|Hypo|Hyper nictitating membrane haw the nictitating membrane of a horse protective fold a flap of tissue that protects what it covers |
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