declare null and void meaning in Chinese

宣告无效

The contract was declared null and void
该合同被宣告无效。
Such a chat usually results in our season tickets being taken away or our memberships declared null and void
这样的聊天一般都会导致我们这个赛季的球票被取消，或者我们的会员资格被宣布无效。
Relying parties are reminded that minors are not legallycapable of entering into contracts , and any such dealings may be declared null and void in the future
兹提醒倚据人士，未成年人不能合法订立合约，任何与未成年人进行的交易将来可能被判无效或作废。
Relying parties are reminded that minors are not legally capable of entering into contracts , and any such dealings may be declared null and void
向未成年人发出的电子核证个人证书可载有对倚据证书人士的特别警示，因为根据法律规定，未成年人可能不受若干合约约束。
Let me hasten to add , " continued he , " that the testator , having only the right to alienate a part of his fortune , and having alienated it all , the will will not bear scrutiny , and is declared null and void .
“是的， ”维尔福说， “但我要提醒伊皮奈先生，在我在世的期间，家父的遗嘱是不能更改。因为我的地位绝对不容许招惹一丝谗谤。 ”