null and void vote翻译;无效票决
make null and void因失效而废弃
declare null and void宣告无效
be null and void无效的;翻译
Rescue null and void抢救无效
T Null and Void传统金属
null and void treaty无效条约
market null and void市场失效
become null and void无效
ChapterⅡelaborates the concrete regulations of "declaring the contract null and void" institution in some country and compares the differences.
第二部分,具体阐述各国及《公约》对“宣告合同无效”制度的规定,概括其异同。
参考来源 - 论CISG中“宣告合同无效”制度（研究生论文）