| 单词 | phylum |
| 释义 | phylum noun[C] biologyspecializeduk/ˈfaɪ.ləm/us/ˈfaɪ.ləm/amaindivisionin ataxonomic(=scientificnamingandorganizationsystem)relatingtoanimals: （动物分类的）门Members of thelargestand mostdiversephylum ofanimals(Arthropoda), havesegmentedbodiesand anexternalskeleton.动物界中数量和种类最多的一个门（节肢动物门）的成员躯体分节，有外骨骼。 Species & genders
phylum| American Dictionaryphylum noun[C] us/ˈfɑɪ·ləm/biology one of thegroupsinto whichanimalsaredivided,mainlybasedon theshapeof the animal'sbodyand the way that thebodyisarranged Examplesofphylumphylum Origin of the metazoan phyla: molecular clocks confirm palaeontological estimates. From theCambridge English Corpus Whereas they are consistent in the classification of lower level taxa, the major divisions of thephylumdiffer according to the characters used. From theCambridge English Corpus However, while there are many universal themes underlying fertilisation biology, there are also interesting differences between phyla and even between species. From theCambridge English Corpus The editors studiously avoid any further mention of ' stocks ', ' phyla ', or ' superfamilies ' of any kind. From theCambridge English Corpus Operant processes are known to occur in several phyla, suggesting that their origin reaches deeply into the history of life on earth. From theCambridge English Corpus What it conspicuously doesn't do, however, is say anything too explicit about the origin of phyla. From theCambridge English Corpus One area of particular interest at the moment in metazoan phylogeny is the status of a number of so-called minor phyla. From theCambridge English Corpus The free-living planaria tissue section was used as a negative control, because this organism belonged to the samephylum. From theCambridge English Corpus Eggs may in some cases be partially or totally activated by spermatozoa from a different species or, indeed,phylum. From theCambridge English Corpus Even at the level of family orphylum, progress is painfully slow. From theCambridge English Corpus Over the years, we noticed that he was working his way through smaller species and then down the phyla of the animal and insect kingdoms. From theCambridge English Corpus The model systems reported on for dormancy research from other kingdoms included the tardigrades (or waterbears), a fascinatingphylumof approximately 750 species. From theCambridge English Corpus Since the sampling method used here mitigates the effects on the sample of the postulation of large phyla, this criticism hardly affects the constitution of our sample. From theCambridge English Corpus Hence,phylum-level conclusions on function should be drawn cautiously. From theCambridge English Corpus A century and a half on, the mystery of mysteries may have inflated to the origin of phyla, but the approach remains very much the same. From theCambridge English Corpus These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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