signist

例句：

1. 1. The document was signed by all the relevant parties involved in the agreement.
   该文件由所有相关方在协议中签字。
2. 2.The signature of the president is required for official documents.
   总统的签字是正式文件的必要条件。
3. 3. The witness testified that they had witnessed the event and signed a statement confirming their account.
   证人作证称他们目睹了该事件并签署了一份确认其陈述的声明。