| 单词 | null |
| 释义 | null /nul/, adj. 1. without value, effect, consequence, or significance. 2. being or amounting to nothing; nil; lacking; nonexistent. 3. Math. (of a set) a. empty. b. of measure zero. 4. being or amounting to zero. 5. null and void, without legal force or effect; not valid: This contract is null and void. n. 6. Electronics. a point of minimum signal reception, as on a radio direction finder or other electronic meter. v.t. 7. to cancel; make null. [1555-65; < L nullus, equiv. to n(e) not + ullus any] |
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