单词	Hemichordata
释义	Hemichordata /ˌhɛmɪkɔːˈdeɪtə / plural noun Zoology A small phylum of marine invertebrates that comprises the acorn worms.The superphylum Deuterostomia contains the diverse phyla Chordata and Echinodermata and the minor phyla Hemichordata and Urochordata.... The superphyla Deuterostomia (e.g., Chordata, Echinodermata, Hemichordata) and Protostomia each appear to have evolved from an ancestor with a coelomic body cavity. Metamorphosis in the acorn worms (Hemichordata, Enteropneusta) includes retention of the entire larval body, which sheds feeding and propulsory cilia and undergoes definitive shape changes. Origin Modern Latin (see hemi-, Chordata).
随便看	Byelorussian by extension by fair means or foul by far by force of by-form bygone by hand by heart by hokey by hook or by crook by implication by inches by itself by jingo! by Jove by-law byline by main force by marriage by means of by mistake by myself by name byname

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