null
美[nʌl] 英[nʌl]
adj. 无效的;无价值的;无效力的
n. 零;空
vt. 使无效
详细释义
adj.(形容词)- 无效的,无效力的,无用的,无益的
- 无价值的
- 无束缚力的
- 等于零的,零值的
- 【数】零的,空的
- 没特征的,没表情的
- 不存在的,没有的
- 零(位)的
- 毫不引起注意的
- 无法律效力的
n.(名词)- 【数】零,零位,空
- 【无线电】零讯号,微弱讯号
- 平衡
- 无感点
- 静音点
英英释义
Noun- a quantity of no importance;
"it looked like nothing I had ever seen before" "reduced to nil all the work we had done" "we racked up a pathetic goose egg" "it was all for naught" "I didn't hear zilch about it"
Adjective- lacking any legal or binding force;
"null and void"
例句
用作形容词(adj.)- Their actions rendered the contract null and void.他们的行为使合同无效。
- The marriage was declared null and void.婚姻已宣告无效了。
用作名词(n.)- The path must end with a null character.该路经必须以零结尾。
- Vomit in null gravity wouldn't be fun.如果在零重力下呕吐了可不是件好笑的事。
- A null reference pointer was passed to the stub.向占位程序传送了空的索引指针。
- Primary keys do not allow null values.主键不允许空值。