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positivity    
n. 确实,确信,积极性

确实,确信,积极性

positivity
n 1: the character of the positive electric pole [synonym:
{positivity}, {positiveness}] [ant: {negativeness},
{negativity}]
2: a quality or state characterized by certainty or acceptance
or affirmation and dogmatic assertiveness [synonym: {positivity},
{positiveness}, {positivism}] [ant: {negativeness},
{negativism}, {negativity}]
3: the quality of being encouraging or promising of a successful
outcome [synonym: {favorableness}, {favourableness},
{advantageousness}, {positivity}, {positiveness},
{profitableness}] [ant: {unfavorableness},
{unfavourableness}]
4: an amount greater than zero [synonym: {positivity},
{positiveness}] [ant: {negativeness}, {negativity}]
5: the quality of being undeniable and not worth arguing about
[synonym: {incontrovertibility}, {incontrovertibleness},
{positivity}, {positiveness}]


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  • Fish - Wikipedia
    A fish (pl : fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and
  • Fish | Definition, Species, Classification, Facts | Britannica
    A fish is any of approximately 34,000 species of vertebrate animals (phylum Chordata) found in the fresh and salt waters of the world Living fish species range from the primitive jawless lampreys and hagfishes through the cartilaginous sharks, skates, and rays to the abundant and diverse bony fishes
  • Fish: The Ultimate Guide To Fishes Fish Life - Active Wild
    A fish is an aquatic vertebrate with fins and gills The body of a typical fish is streamlined and covered in protective scales Around half of all known vertebrates are fish, making fish the dominant vertebrate animals on the planet Fish are found in both salt and freshwater habitats in most parts of the world
  • Fish Pictures Facts - National Geographic
    All fish share two traits: they live in water and they have a backbone—they are vertebrates Apart from these similarities, however, many of the species in this group differ markedly from one
  • Fish: Different Types, Definitions, Photos, and More
    Instead, there are 3 main classes, groups, or types of fish: bony fish (Osteichthyes), jawless fish (Agnatha), and cartilaginous fish (Chondrichthyes) Fish are the most diverse group among vertebrates, with over 33,000 different types of fish species
  • 100 Types of Fish (List of Fish Names with Pictures)
    The term “fish” refers to a diverse group of aquatic creatures known for living in water environments Fish are characterized by their gills, which they use for breathing underwater, and typically have a body covered with scales
  • Fish – Definition, Examples, Characteristics - Science Notes and Projects
    Fish are aquatic vertebrates that typically have gills, fins, and a streamlined body They inhabit diverse environments, from freshwater rivers and lakes to salty oceans and deep seas Shared Characteristics with Other Vertebrates Fish, like all vertebrates, possess a backbone or spinal column
  • What is a fish? - Understanding Evolution
    The term fish is a convenient term used to refer to diverse aquatic organisms, such as lampreys, sharks, coelacanths (SEE-luh-kanths), and ray-finned fishes — but it is not a taxonomic group that would be used in a phylogenetic classification scheme, as “vertebrates” or “hominids” is That’s because phylogenetic taxonomic groups must be clades
  • 12 Best Types of Fish to Eat - Healthline
    Fish are undeniably a healthy food, but they can have high levels of contaminants, too Save this list of some of the safest fish with the best nutrition profiles
  • What is a Fish? | manoa. hawaii. edu ExploringOurFluidEarth
    Fish and Fishes Fish are aquatic vertebrate animals that have gills but lack limbs with digits, like fingers or toes Recall that vertebrates are animals with internal backbones Most fish are streamlined in their general body form





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