nullKK [nʌl] /nʌl/发音形容词1无效的、失效的法律The court ruled that the earlier agreement was null.法院裁定先前的协议无效。2空的、零的电脑Leave the field null if the customer has no phone number.如果客户没有电话号码,这个栏位就留空。3等于零的、不存在的正式The effect of the new policy on wages was essentially null.新政策对薪资的影响几乎等于零。名词1空值、null电脑The function returns null when no match is found.找不到相符的资料时,这个函式会回传空值。2零、零位技术Turn the dial until the meter reads a null.转动旋钮,直到仪表显示为零。片语1无效、作废法律Without both signatures, the contract is null and void.缺少双方签名,这份合约就无效。用这个字练口说→相关片语null and void