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nictitating membrane /ˈnjuː ˈfjuːəl ˈstɔːɹɪdʒ ˈɹuːm/ n

中文：瞬膜

中文 · 瞬膜Español · párpado internoFrançais · paupière interne
Meaning：Thin muscular membrane extending sideways from the inside corner of the eye to protect and moisten it.
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