wèile / fángzhǐ / jiūfēn / shuāngfāng / juédìng / bǎ / huóqì / biàngēng / wéi / sǐqì

为了防止纠纷，双方决定把活契变更为死契。

To prevent disputes, both parties decided to change the revocable deed into an irrevocable one.