| 单词 | tadpole |
| 释义 | tadpole noun[C] uk/ˈtæd.pəʊl/us/ˈtæd.poʊl/asmall,blackcreaturewith alargeheadandlongtailthatlivesinwateranddevelopsinto afrogortoad 蝌蚪 Suntipab/ iStock/Getty Images Plus/GettyImages Animal young
tadpole| American Dictionarytadpole noun[C] us/ˈtædˌpoʊl/arecentlyborncreaturewith alargehead,longtail, and noarmsorlegs, whichlivesinwateranddevelopsinto afrogortoad Examplesoftadpoletadpole Anti-predator defence mechanisms may have evolved during the process that enabled thesetadpolespecies to occupy large permanent streams, which often shelter predatory fishes. From theCambridge English Corpus In sites where visibility was too poor for observation of tadpoles, such as areas with submerged aquatic vegetation, microhabitats were sampled with a small dipnet. From theCambridge English Corpus Females construct underground nests, typically at the beginning of the rainy season before temporary ponds fill, in which they oviposit and attend eggs and tadpoles. From theCambridge English Corpus Dendrobatids with terrestrial oviposition and subsequent parentaltadpoletransportation were continuously active. From theCambridge English Corpus The role of adult anurans in choosing oviposition sites may also influence the distribution oftadpolespecies among streams. From theCambridge English Corpus We investigated the correlation between calling activity, rainfall, temperature and water level in two ponds and recorded the occurrence of tadpoles of pond-breeding species. From theCambridge English Corpus In the third axis, larger values indicate use of deeper microhabitats by tadpoles. From theCambridge English Corpus Tadpoles were counted and the number of tadpoles per sweep calculated. From theCambridge English Corpus Most ascidian species exhibit indirect development in which the egg develops into atadpolelarva. From theCambridge English Corpus Eggs and tadpoles were reared to metamorphosis in buckets of stream water to confirm species identification. From theCambridge English Corpus In this situation, oncomiracidia are available to infect tadpoles during the brief period of the rainy season. From theCambridge English Corpus Pond tadpoles with generalized morphology: is it time to reconsider their functional roles in aquatic communities? From theCambridge English Corpus This would imply indiscriminate use of available niche space by tadpoles, with no other factor limiting their distribution. From theCambridge English Corpus They multiply enormously in the crop, undergoing a great change in appearance, beingtadpole-like in form and having a crithidia-like arrangement of the nuclei. From theCambridge English Corpus Freshly hatched tadpoles had a prominent yolk sac, the contents of which were rapidly used up during the first few days of development. 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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