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单词 θ34231
释义
the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > thorax > prothorax > lower part of (3)
pectus1819

Entomology. The lower surface of the thorax or prothorax of an insect or a spider.

prosternum1826

The median ventral section of the prothorax of an insect.

presternum1828

Entomology. = prosternum, n. Obsolete. rare.

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