pro·tho·rax /(ˌ)proˈθorˌæks, ˈθɔr-/
前胸
Pro·tho·rax n. Zool. The first or anterior segment of the thorax in insects. See Illusts. of Butterfly and Coleoptera.
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prothorax
n : the anterior part of an insect's thorax; bears the first
pair of legs
[also: prothoraces (pl)]