Jisho

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口角下制筋
Wikipedia definition
1. Depressor anguli oris muscleThe Depressor anguli oris (Triangularis) arises from the oblique line of the mandible, whence its fibres converge, to be inserted, by a narrow fasciculus, into the angle of the mouth.
Read “Depressor anguli oris muscle” on English Wikipedia
Read “口角下制筋” on Japanese Wikipedia
Read “Depressor anguli oris muscle” on DBpedia

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