tā / zài / qiān / dìng / hé / tong / shí / shàng / xià / qí / shǒu / jié / guǒ / bèi / duì / fāng / fā / xiàn / le

他在签订合同时上下其手，结果被对方发现了。

He engaged in underhanded manipulation when signing the contract, and the other party eventually discovered it.