| 单词 | necessary |
| 释义 | Word Frequency necessary(ˈnɛsɪsərɪ) adjective 1. needed to achieve a certain desired effect or result; required 2. resulting from necessity; inevitable the necessary consequences of your action 3. logic a. (of a statement, formula, etc) true under all interpretations or in all possible circumstances b. (of a proposition) determined to be true by its meaning, so that its denial would be self-contradictory c. (of a property) essential, so that without it its subject would not be the entity it is d. (of an inference) always yielding a true conclusion when its premises are true; valid e. (of a condition) entailed by the truth of some statement or the obtaining of some state of affairs Compare sufficient (sense 2)4. philosophy (in a nonlogical sense) expressing a law of nature, so that if it is in this sense necessary that all As areB, even although it is not contradictory to conceive of an A which is not B, we are licensed to infer that if something were an A it would have to be B 5. rare compelled, as by necessity or law; not free noun 6. the necessary 7. do the necessary Word origin C14: from Latin necessārius indispensable, from necesse unavoidable |
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