sigh up for meaning in English

Item department kept close touch with each participant team since they sighed up for the competition and urged them to finish the work as quick as possible
从报名之日起，项目部负责人开始与参赛队保持联系，督促参赛同学尽快完成各项工作，包括源代码和执行程序的提交，各期开发文档的整理等。
Item department kept close touch with each participant team since they sighed up for the competition and urged them to finish the work as quickly as possible
从报名之日起，项目部负责人开始与参赛队保持联系，督促参赛同学尽快完成各项工作，包括源代码和执行程序的提交，各期开发文档的整理等。