用third eyelid造句子，“third eyelid”造句

If you watch a cat blink, you will see a white membrane cross its eye - that is called its third eyelid.

You may not know it, but you have a third eyelid.

Ocular tumors in dogs are found in the eyelid, conjunctiva, third eyelid, cornea, sclera, iris, ciliary body, retina, choroid, optic nerve, and orbit.