adj. 〈术〉零值的;等于零的;(协议) 无法律效力;失效的
The contract was declared null and void.
合同被宣布无效。
A spokeswoman said the agreement had been declared null and void.
一位女发言人说那个协议已被宣布为无效的。
That vector is called a "null vector".
那种矢量就叫做”零矢量“。
The breakup of the null can be ruled out as the cause of the sinking.
空值的分解可以排除为下沉的原因。
For more discussion on this issue, see my article "The Null Flag Bug Pattern".
关于这个问题的更多讨论,请参阅我的文章《空标志错误模式》。