adj.无效的; （协议） 无法律效力，失效的

well and good───也好；满意

fill the void───填补空白

full and by───全部和全部

ball and chain───锁链；拖累；妻子

ball and ring───球和环

cut and dried───固定的；已成定局的；老生常谈

declared void───宣告无效

hot and cold───冷热水；热的和冷的

null method───[电]零点法（等于zeromethod）

In answer questions on this or any other location null and void.───作答在试题本上或其他位置的一律无效.

Almost every new law makes some old one null and void.───几乎每一新的法律实施都使得某一旧的法律无效.

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。

The court ruled that the claim was null and void.───法庭裁决此项要求无效.

Which became null and void the minute you sold the Cross.───在你出售十字架的时候这个协议已经失效了.

The contract was declared null and void.───合同被宣布无效。

An endorsement by the deawee is null and void.───付款人背书无效.

The contract was null and void because it was not signed.───这个合同无效,因为它尚未签字.

The contract becomes null and void when these documents are surrendered.───当这些文件被放弃时合同变得无效.

The agreement will be considered null and void.───该协议将被视作无效。

The contract was declared null and void.───合同被宣告无效.

Rescinded civil acts shall be null and void from the very beginning.───被撤销的民事行为从行为开始起无效.

Connivance plague spread all cure medicine will return null and void.───纵容瘟疫传播,一切治病的良药都将归无效.

This check is null and void.───本支票无效.

Be careful not to sign a null and void contract.───小心不要鉴定不具有法律效力的协议.

A spokeswoman said the agreement had been declared null and void.───女发言人称该协议已宣布无效。

This contract is null and void.───此合同无效.

Serbia said a declaration would be 'a flagrant and unilateral act of secession of a part of the territory of the Republic of Serbia and... therefore null and void'.───塞尔维亚之前发表的声明称“作为塞尔维亚共和国领土的一部分，单方面脱离联邦是一次无耻行动……因此是无效的”。

The change in the law makes the previous agreement null and void.