null

[nʌl]

adj.无效的, 无价值的,无效力的
n.零, 空
vt.使无效

词形变化

动词过去式: nulled | 动词过去分词: nulled | 动词现在分词: nulling | 动词第三人称单数: nulls |

词义辨析

同义:

a.没用的

ineffectual  inoperative  valueless  worthless  no-good  good-for-nothing  inconsequential  insignificant  trifling  trivial  piddling  immaterial  purposeless  unsubstantial  unavailing  futile  nugatory  useless  inutile  inefficacious  invalid  not binding

a.不存在的, 空的, 愚蠢的

nonexistent  inexistent  unprofitable  blank  empty  clear  bare  hollow  vacuous  senseless  inane  foolish

a.被根除的, 被删除的

annihilated  obliterated  destroyed  extinguished  exterminated  expunged  extirpated  dissolved  eliminated  effaced  

英英释义

名词 null:

a quantity of no importance

同义词：nothing, nil, nix, nada, aught, cipher, cypher, goose egg, naught, zero, zilch, zip, zippo

形容词 null:

lacking any legal or binding force

同义词：void

补充

nullnull英:[nʌl] 美:[nʌl]adj.1.零值的; 等于零的

例句

1. The programme reports a null value.该计划宣告无效。 2. the null set空集 3. The declaration was null and void as it was proclaimed in completely illegal circumstances.该声明无效, 因为它是在完全非法的情况下宣布的。 4. A Chinese spokeswoman said the agreement had been declared null and void.中国外交部的女发言人称该协议已宣布无效。 5. to null a football match取消一场足球比赛 6. the establishment of a new interim government was declared null and void.新临时政府的成立被宣布无效。 7. his curiously null life.他那奇怪的毫无内涵的生活。 8. The contract was declared null. [=invalid]合同被宣布无效。 9. The law was declared null and void.这条法规被宣布无效。