Most of arthropod mouthparts of the second pair of appendages, also known as "small jaw," or "under the cheek." Students on both sides of the mouth below is to help chew food intake ﹑ organs. The shape of a small, long, many short hairs.
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No. 3
Vertebrate jaw bone, also known as jaw. Hong Shen, "the film drama techniques" Chapter 3: "the jaw is not common, a move that would imply that animal."